WP820 - User Guide

Updated on February 20, 2024

WELCOME

Thank you for purchasing Grandstream WP820. This powerful Enterprise Portable Wi-Fi Phone features dual-band 802.11a/b/g/n Wi-Fi, supports Wi-Fi roaming, and integrated Bluetooth. The combination of advanced telephony features and durability make it ideal for mobilizing your VoIP network in residences, warehouses, retail stores, hotels and many more environments. Due to a durable design, this sleek phone is drop safe from 1.2 meters, with 150 hours standby time and 7.5 hours talk time making it an ideal addition for homes and businesses alike.

PRODUCT OVERVIEW

Feature Highlights

The following table contains the major features of the WP820:

	2 SIP accounts and 2 lines. 3-way audio conference calls. Dual-band 802.11a/b/g/n Wi-Fi. Wi-Fi roaming and integrated Bluetooth. 150 hours standby time. 7.5 hours talk time.

WP820 Features at a Glance

Technical Specifications

The following table resumes all the technical specifications including the protocols/standards supported, voice codecs, telephony features, languages, and upgrade/provisioning settings for the Base station WP820.

Protocols/Standards	SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV,NAPTR), DHCP, SSH, TFTP, NTP, STUN, SIMPLE, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6
Voice Codecs and Capabilities	Support for G.711μ/a, G.729A/B, G.722 (wide-band), iLBC, Opus, in-band, and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC, ANS
Wi-Fi	Yes, integrated dual-band Wi-Fi 802.11 a/b/g/n (2.4GHz & 5GHz)
Wi-Fi Encryption	WEP, WPA/WPA2, WPA Enterprise
Graphic Display	2.4-inch (240×320) TFT color LCD
Peripherals	3 soft keys, dial, hang up, speakerphone, phonebook, backlit keypad, proximity sensor, accelerator, vibration motor, volume button and navigation keys
Push-to-Talk	Customizable button for push-to-talk, panic call and other related functions
Bluetooth	Yes, Bluetooth integrated.
Auxiliary Ports	3.5 mm headset jack, Micro-USB port for charging, dual-MIC, dual-color LED.
Telephony Features	Hold, transfer, forward, 3-way audio conference, downloadable phonebook (XML, up to 1000 items), call waiting, call log (up to 100 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized music ringtones and music on hold, server redundancy and fail-over, push to talk
Security	User and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES based secure configuration file, SRTP, TLS, 802.1x media access control
HD Audio	Yes, both on handset and speakerphone with support for wideband audio, HAC supported
QoS	802.11e (WMM) and Layer 3 (ToS, DiffServ, MPLS) QoS
Multi-language	English, Arabic, Chinese, Czech, Dutch, German, French, Hebrew, Italian, Japanese, Polish, Portuguese, Russian, Spanish, Turkish, Hungarian, and Slovenian.
Upgrade/ Provisioning	Firmware upgrade via TFTP/HTTP/HTTPS, manual upload, mass provisioning using TR-069 or encrypted XML configuration file, manual upload, USB upgrade
Power & Green Energy Efficiency	Universal power adapter included Input: 100-240VAC; Output: +5VDC, 1A (5W) 1500mA Li-ion battery, 150h standby time and 7.5h talk time
Physical	Handset dimensions: 168.5 x 52.5 x 21.8mm Charger cradle dimensions : 76 x 73 x 81mm Handset weight: 161g Handset package weight (not including QIG): 456g
Temperature and Humidity	Operating Temperature: 0~45°C; Operating Humidity: 10~90%(non-condensing) Storage Temperature: -20~60°C; Storage Temperature:10~90%(non-condensing)
Package Contents	Handset unit, universal power supply, charger cradle, belt clip, 1 Li-ion battery. Quick Installation Guide.
Durability	Drop-safe from 1.2 meters height
Compliance	FCC, CE, RCM, IC

WP820 Technical Specifications

GETTING STARTED

This chapter provides basic installation instructions including the list of the packaging contents and also information for obtaining best performance with the WP820.

Equipment Packaging

WP820
1x Handset unit 1x Universal power supply 5V 1x Charger cradle 1x Belt clip 1x Rechargeable battery 1x Quick Installation Guide 1x GPL Statement

Equipment Packaging

Important

Check the package before installation. If you find anything missing, contact your system administrator.

Setting up the WP820

Charging Station

Plug the power adapter into a power source socket to start using the charging station.

Handset

Please refer to the following steps in order to setup your WP820:

Open the battery cover.
Insert the battery with the electrodes in the bottom left corner.
Close the battery cover.

Note

Please charge the battery fully before using the handset for the first time. (For more information about the battery, please refer to Battery Information.

Battery Information

Technology: Rechargeable Li-ion Battery
Voltage: 3.8V (Nominal Voltage 3.8V / Limited charge Voltage: 4.35 V)
Capacity: 1500mAh
Standby time: up to 150 hours
Talk time: up to 7.5 hours’ active talk time

In order to get the best performance of your WP820, we recommend using original battery provided in the package. The specifications may differ depending on the age and capacity of the battery used.

Notes

WP820 Wi-Fi phone generates a warning tone when device’s battery level becomes 15% and 5%.
WP820 auto boots up once placed on charger when device was powered off abnormally (Battery too low, battery removed suddenly, etc..).

Important

Be careful when inserting the battery into your handset to avoid any risk of short-circuit, which lead to damage your battery and/or the handset itself. Do not use damaged batteries which can increase the risk of serious harm.

WP820 Handset Keys Description

The WP820 enhances communication and combines usability and scalability in industries such as warehousing, catering, and retail as well as in factory settings. The following screenshot describe the WP820 LCD screen and the main hardware components.

The following table describes the WP820 keypad keys.

	Key	Description
1	Proximity sensor	The proximity senor can detect the presence of a human ear. This sensing is done for two purposes: Reduce display power consumption by turning off the LCD backlight and to avoid inadvertent touches.
2	Earphone	Delivers audio output.
3,4	Volume up / Down Keys	Configure the handset and ringtone volume.
5	PTT Key	PTT (Push-to-Talk) button to initiate PTT call. Note: PTT button can also be configured from Web GUI to have other functions such as: SAFE/Panic Call & Mute/Unmute during calls.




6	Hands-free / Speaker key	Switches between Handset and Hands-free / Speaker modes.
7	Arrow key combination (Up, Down, Left, Right)	Allows navigation of the cursor through the displayed menu options.
8	Off-hook / Dial key	Enters dialing mode, or dials number entered.
9	Alphanumeric Keypad	Provides the digits, letters, and special characters in context-sensitive applications. For + sign, press and hold key 0.
10	* / Mute key	Activates or deactivates the mute feature when keep pressing on * in idle screen.
11	LED indicator	1dual-color LED indicator indicating: power, call, battery, message waiting …
12	3.5 mm headset jack	Phone connector for the headphones/headsets.
13	Color LCD Screen	2.4-inch (240×320) TFT color LCD
14	Softkeys	Correspond to functions displayed on the LCD. These functions change depending on the current context, and they can be customized on Home screen and Call screen from the Web GUI.
15	Contacts	Access to contacts list.
16	Menu/OK key	Selects the option chosen by the cursor or enters the main menu from the home screen.
17	On-hook or Power key	Terminates calls or turns the handset on / off.
18	# / Lock key	Locks keypad against unintentional entries when keep pressing #. Press and hold # key for approximately 2 seconds to lock the keys. Press Unlock softkey and then # to unlock the keys.






19	Microphone	Picks up audio earpiece and hands-free calls.

WP820 Icons Description

Following table contains description of each icon that might be displayed on the screen of the WP820.

	Battery status Charging
	Wi-Fi not enabled/configured
	Wi-Fi signal status
	Outgoing Call notification
	Missed Call notification
	Incoming Call notification
	Voicemail notification (Urgent)
	Voicemail notification (Normal)
	Mute enabled icon
	DND enabled icon
	Bluetooth enabled icon
	Bluetooth connected icon
	SRTP & TLS enabled icon
	Contacts
	SMS
	Call History
	Voice Mail
	Diagnosis
	Settings
	Applications
	Status
	Broadsoft XSI

WP820 Icons Description

Note

SRTP & TLS enabled icon will be displayed only in case signaling and media are both encrypted.

WP820 LED Status

Red Fast Flashing	Upgrading
Green Slow Flashing	Incoming call
Green Blinking	Charging but not full
Green Solid	Charging (full)
Red Slow Flashing	Missed call (s) New voicemail (s) New SIP Message (s)
Red Solid	Network disconnected
LED OFF	Normal

WP820 LED Status

The handset has an easy-to-use menu structure. Every menu opens a list of options. To open the main menu, unlock first the handset and press “Menu” (softkey in the middle). Press Arrow keys to navigate to the menu option you require. Then press “Select” (left softkey) or OK/Selection key to access further options or confirm the setting displayed.

To go to the previous menu item, press “Back” (right softkey). You can press Power key at any time to cancel and return to standby mode.

Contacts	Display the list of the registered contacts and also the groups contacts with the ability of searching, adding, or editing the entries and also deleting the selected contacts. The maximum number of contacts is 1000.
Call History	Display the call history: Missed Calls, Accepted Calls, Outgoing Calls or All Calls. You can add contacts to Shared Contacts directly from call logs.
SMS	SMS stands for Short Message Service and referred to as a “text message”. With a SMS, you can send a message by pressing “New” of up to 160 characters to another device or check the received ones.
Voice Mail	Play Message: Play voice mail messages received. Set Voice Mail: Configure voice mail parameters.


Diagnostics	LCD diagnosis LCD off LED diagnosis Keypad diagnosis Audio loopback Acceleration sensor Sensor calibration Proximity sensor Vibrator Certificate Verification Traceroute Ping NSLookup One-click Debugging














Settings	Account Configure/View SIP accounts settings and account ringtone. Call settings Configure the account auto answer, call forward, DND and speed dial settings. Network Settings Configure the networks settings including Wi-Fi settings and additional networks settings. Bluetooth Settings Configure the Bluetooth settings including discovery, pairing and connection actions. Basic Settings Configure the basic settings including voice settings, display settings, Gestures and button customization, language settings and date/time settings. Advanced Settings Configure the advanced settings including system upgrade, PTT/Paging settings, system security settings, syslog settings and factory reset / reboot.






















Applications	Alarm Clock: Configures the alarm clock settings Calculator: performs arithmetic operations on numbers.


Broadsoft XSI	Broadsoft account.

Status	Displays account status, system info, Network status and network statistics Account status. Network status: Press to enter the sub menu for MAC address, IP setting information (DHCP/Static IP), IPv4 address, IPv6 address, Subnet Mask, Gateway; DNS server and VPN. System Info: Press to enter the sub menu for Running memory, Storage status, MAC address, System version, Recovery version, U-boot version, Kernel version, Hardware version, PN number, Country code and Running time. Network Statistics: Press to enter the sub menu for Network SSID, BSSID, IP address, Signal strength, Connection speed, Channel, Frequency, Tx packets, Tx error packets, Tx error rate, Tx drop packets, Tx drop rate, Rx packets, Rx error packets, Rx error rate, Rx drop packets, Rx drop rate. Battery: Displays the battery status and the battery usage details.

WP820 Keypad

The WP820 keypad can be used by tapping on an input field. WP820 keypad has 4 modes “ABCabc2”, “ABC”, “abc” and “123”. Default mode is “ABCabc2”. Note: If the input field is accepting only digits, only “123” mode will be available.

“ABCabc2” Mode:

This mode allows to enter capital letters, small letters, digits, and symbolic characters.

Following table describes allowed characters for each key.

Key	Description	Key	Description	Key	Description
1	. , ’ ? ! ” – 1	2	A B C a b c 2	3	D E F d e f 3
4	G H I g h i 4	5	J K L j k l 5	6	M N O m n o 6
7	P Q R S p q r s 7	8	T U V t u v 8	9	W X Y Z w x y z 9
*	. , ‘ ? ! “ – ( ) @ / : _ ; + % * = < > $ [ ] { } ~ ^ # \| ` &	0	Space	#	Switch mode

“ABC” Mode:

This mode allows to enter capital letters, digits, and symbolic characters.

Following table describes allowed characters for each key.

Key	Description	Key	Description	Key	Description
1	. , ’ ? ! ” – 1	2	A B C 2	3	D E F 3
4	G H I 4	5	J K L 5	6	M N O 6
7	P Q R S 7	8	T U V 8	9	W X Y Z 9
*	. , ‘ ? ! “ – ( ) @ / : _ ; + % * = < > $ [ ] { } ~ ^ # \| ` &	0	Space	#	Switch mode

“abc” Mode:

This mode allows to enter small letters, digits, and symbolic characters.

Following table describes allowed characters for each key.

Key	Description	Key	Description	Key	Description
1	. , ’ ? ! ” – 1	2	a b c 2	3	d e f 3
4	g h i 4	5	j k l 5	6	m n o 6
7	p q r s 7	8	t u v 8	9	w x y z 9
*	. , ‘ ? ! “ – ( ) @ / : _ ; + % * = < > $ [ ] { } ~ ^ # \| ` &	0	Space	#	Switch mode

“123” Mode: This mode allows to enter digits and . only.

Following table describes allowed characters for each key.

Key	Description	Key	Description	Key	Description
1	1	2	2	3	3
4	4	5	5	6	6
7	7	8	8	9	9
*	.	0	0	#	Switch mode

Tips using the keypad:

To switch between the modes, users could press the middle softkey or # key.
Press multiple times on same key to move forward between the allowed characters.
Use Right/Left arrow keys to change the cursor’s position on the text entered.

QUICK SETUP WIZARD

The WP820 offers a Setup Wizard tool to help users to quickly configure basic settings on the device such as language, time zone, Wi-Fi, and SIP account. The setup wizard appears automatically upon initial boot up of a factory default device.

WP820 WEB GUI ACCESS CONFIGURATION

The WP820 can be configured using:

Web GUI embedded on the WP820 using PC’s web browser.
LCD Configuration Menu using the WP820 keypad.

Note

From the Web GUI, you can configure all the functions supported by the WP820; while via keypad menu, you can access limited configuration.

Configuration via Web Browser

The WP820 embedded Web server responds to HTTP/HTTPS GET/POST requests. Embedded HTML pages allow a user to configure the WP820 through a Web browser such as Google Chrome, Mozilla Firefox.

Note

Please note that Microsoft’s IE 9 and below are not supported, also the records from the web cannot be played with IE10, Edge and Safari. We highly recommend using Google Chrome or Mozilla Firefox.

Accessing the Web UI

Connect the computer to the same network as WP820.
Make sure the WP820 is booted up and powered correctly.
You may check WP820 IP address via a subscribed WP820 on its LCD menu Settings 🡪 Network Status. Please see [WP820 Network Status]
Open Web browser on your computer and enter the WP820 IP address in the address bar of the browser.
Enter the administrator’s username and password to access the Web Configuration Menu.

Note

The computer must be connected to the same sub-network as the WP820. This can be easily done by connecting the computer to the same hub or switch as the WP820.
The default administrator username and password are “admin”; the default end-user username is “user“ and the password is “123”.
If ‘Disable web UI access’ parameter is enabled under Advanced settings 🡪 System security; web UI access will be disabled.

Web GUI Languages

Currently the WP820 web GUI supports English, Chinese languages.
Users can select the displayed language in web GUI login page, or at the upper right of the web GUI after logging in

Saving the Configuration Changes

When changing any settings, always submit them by pressing Save and Apply buttons. If using the Save button, after making all the changes, click on the Apply button on top of the page to submit.

Web UI Access Level Management

There are two default passwords for the login page:

User Level	Username	Password	Web Pages Allowed
End User Level	user	123	Only Status, Phone Settings, System Settings, Maintenance and System Application with limited options.
Administrator Level	admin	admin	All pages

Changing User Level Password

Access the Web GUI of your WP820 using the admin’s username and password. (Default username and password are: admin/admin).
Press Login to access your settings.
Go to System Settings 🡪 Security Settings.
In User Info Management, locate user password section:
- Type in the admin password in the Current Admin Password field.
- Type in your new user password in New User Password field.
- Type in again same entered password in Confirm New User Password field.
Press Save and Apply buttons to save your new settings.

Note

DO NOT USE same password for both user and admin accounts.
The password is case sensitive with maximum length of 25 characters.

Changing Admin Level Password

Access the Web GUI of your WP820 using the admin’s username and password. (Default username and password is: admin/admin).
Press Login to access your settings.
Go to System Settings 🡪 Security Settings.
In User Info Management, locate admin password section:
- Type in the admin password in the Current Admin Password field
- Type in your new user password in New Admin Password field.
- Type in again same entered password in Confirm New Admin Password field.
Press Save and Apply buttons to save your new settings.

Note

DO NOT USE same password for both user and admin accounts.
The password is case sensitive with maximum length of 25 characters.

Changing HTTP / HTTPS Web Access Port

Access the Web GUI of your WP820 using the admin’s username and password. (Default username and password are: admin/admin).
Press Login to access your settings.
Go to System Settings 🡪 Security Settings.
In Web/SSH Access page, select the access method depending on desired protocol (HTTP or HTTPS)
Locate HTTP / HTTPS Web Port field and change it to your desired/new HTTP / HTTPS port.
Note: By default, the HTTP port is 80 and HTTPS is 443.
Press Save and Apply buttons to save your new settings.

Note

After modifying the connection method or port, the web GUI will be automatically logged out and redirected to the new address

BASIC OPERATIONS

WP820 Home Screen

The WP820 Home screen comprises three pages that make it easy for the customer to access some settings, parameters, or notifications. Please refer to the following screenshots:

Left Home Screen Page:

This page lists all the notifications that users need to check: Missed calls, unread SMS, unread Voice mails, etc …
Users can access the notification by tapping on OK button, delete the notification by tapping on the left softkey or clear all the notifications by tapping on the middle softkey.

Middle Home Screen Page:

The middle page of Home screen shows date/time and the registered SIP account(s) on the WP820.
Users can access by default to History, Menu or Setting by using softkeys, and Administrator is able to change the functions of softkeys on Home screen from the Web GUI.

Right Home Screen Page:

The right page is providing the users quick access to Wi-Fi, Bluetooth and DND option and configuration.
Users can turn on/off the option using the middle softkey, while they also can access to the settings of each option by tapping on the left softkey.

Turning the Handset ON/OFF

To turn ON the handset: Long press on Power key $C:\Users\GSUser\Downloads\Icons\diagnostics_Button_end_press.png$ until the LCD screen lights up.

To turn OFF the handset: Long press on Power key $C:\Users\GSUser\Downloads\Icons\diagnostics_Button_end_press.png$ again when the handset is idle and press the softkey to choose to power off or reboot.

Connecting WP820 to Wi-Fi Network

Auto Connection

For easy deployment, WP820 out of the box is preconfigured to connect to a default SSID named wp_master with a password (WPA/WPA2 PSK) equal to wp!987@dmin, users can adapt these settings from the web UI as well to make it easier for deployment on customer site.

Go under the web interface of the “Network Settings 🡪 Wi-Fi Settings 🡪 Wi-Fi Security”.

For example, the user can pre-configure the WP to automatically connect to the Wi-Fi network at the client site, making it easier for the client to use the phone without going through the setting up manually the Wi-Fi network. Also, the client could have the SSID hidden by default, and the WP820 handset would still be able to connect to the Wi-Fi network since they have SSID and password information configured.

Manual connection

The WP820 supports dual-band 802.11a/b/g/n Wi-Fi, please refer to the following steps in order to connect your WP820 to the Wi-Fi networks:

On LCD menu, press Menu key and navigate to Settings → Network Settings → Wi–Fi.
Set Wi-Fi to “On “ and navigate to “Wi-Fi Settings “. A list of Wi-Fi networks will be displayed.
Select the desired network to connect to. (Enter the correct password to connect if requested)

WP820 will display Wi-Fi icon on the main LCD menu if the connection to the Wi-Fi network is successful.

Note

WP820 supports connection to Wi-Fi with captive portal enabled that requires additional credentials to sign up or login before it is allowed to use Wi-Fi.

Note

If you receive a Wi-Fi association reject message from AP, it will show Disabled on available WI-FI networks, and this is not set or configured at WP820 side, the possible reasons are: blacklisted by AP, open band steering or load balance on AP, reach max connection limit of AP, etc…

Wi-Fi Band Configuration

If 5GHz and 2.4Ghz are both available, the WP820 will use 5GHz, but it may switch to 2.4GHz if the signal of 5GHz is poor. Users may also specify the Wi-Fi Band in order to fix it or to keep it Dual Band under Settings🡪Network Settings🡪Wi-Fi Band.

Note

Wi-Fi will restart after changing Wi-Fi frequency.

Wi-Fi Signal Warning Configuration

Users Can configure Wi-Fi signal warning sensitivity or disable it under Settings🡪Network Settings🡪Wi-Fi signal warning. Five sensitivity levels are available: Level 1 is the lowest and level 5 is the highest.

Note

A message prompt also appears to notify users about poor Wi-Fi signal. While during the call, a beep tone will be played to notify users that Wi-Fi connection is lost.

Wi-Fi Roaming Mode Configuration

Wi-Fi Roaming settings configuration can also be done by users under Settings🡪Network Settings🡪Wi-Fi Roaming Mode.

The options that can be configured under “Wi-Fi Roaming Mode” are the following:

Signal Threshold: When the Wi-Fi signal strength of the device drops below this value, the device will scan for a hotspot above the threshold value and connect to it. The default setting is -70.
Good Signal Scan Interval: The time interval for signal scanning when the Wi-Fi signal strength is higher than the signal threshold. The default setting is 600s.
Poor Signal Scan Interval: The time interval for signal scanning when the Wi-Fi signal strength is lower than the signal threshold and there is no hotspot which is higher than the current signal strength. The default setting is 5s.

Connecting WP820 to Bluetooth Devices

Bluetooth is a proprietary, open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security. The WP820 supports Bluetooth.

To connect to a Bluetooth device, turn on the WP820’s Bluetooth radio first. The first time when using a new Bluetooth device with the WP820, “pair” the device with WP820 so that both devices know how to connect securely to each other. After that, users could simply connect to a paired device. Turn off Bluetooth if it is not used.

Bluetooth settings are under WP820’s Settings🡪Network Settings🡪Bluetooth Settings.

Turn On/Off Bluetooth

Go to WP820’s Settings🡪Network Settings🡪Bluetooth.
Turn On or Off the Bluetooth option.

Change Bluetooth Device Name

The WP820 uses “WP820_XXXXXX” as Bluetooth device name by default where “XXXXXX” are the last 6 digits of the phone’s Bluetooth MAC address plus 1. The device name will be visible to other devices when connecting them. Follow the steps below to change the name:

Go to WP820’s Settings🡪Network Settings🡪Bluetooth
Turn on Bluetooth.
Go to WP820’s Settings🡪Network Settings🡪Bluetooth Settings.
Press “Device name”.
Enter a name and tap on “Save”

Pair WP820 with a Bluetooth Device

Before connecting the WP820 with other Bluetooth device, users must pair them first. They will stay paired afterwards unless they are unpaired.

Go to WP820’s Settings🡪Network Settings🡪Bluetooth.
Turn on Bluetooth.
Go to WP820’s Settings🡪Network Settings🡪Bluetooth Settings and set “Visible to nearby Bluetooth devices” to ON and set the Visibility timeout settings to make the WP820 phone visible to all nearby Bluetooth devices.
Set the Bluetooth headset mode parameter to ON in order to allow the WP820 to pair with other Bluetooth mobile devices to make calls. After successful pairing, users can press the call key and then press “Accounts” to select the Bluetooth account.

5. Access the Bluetooth devices settings and press on Refresh softkey, the WP820 will scan and display the IDs of all available Bluetooth devices in range. If the device you would like to pair with does not show up in the list (available devices), ensure that the other device is turned on and set to be discoverable.

Once the Bluetooth device shows up in the result, press on it and specify if you want to allow it to access your contacts and call history then press on Pair. Confirm the passkey in the prompted message (if any).

Unpair a Bluetooth Device

In the Bluetooth devices settings 🡪 Paired devices, select, and press on the already paired Bluetooth device name you want to unpair.
Press on Unpair.

Connect to a Bluetooth Device

In the Bluetooth devices settings 🡪 Paired devices, select the paired device you want to connect to.
Press on Connect.

The Bluetooth connected device’s name will be showing in the Bluetooth devices menu.

Connect to a Bluetooth Device from Web Interface