WiFi-Gas Shutoff for Blynk

WiFi-Gas Shutoff for Blynk IoT Server


  • WiFi-DIO (Digital Input/Output) provides 1 digital Input port and 1 Digital output with Relay  and uses 2.4GHz 802.11b/g/n to access the WiFi Router.
  • DI is connected to Gas Detector and DO Relay is used to power the Gas Valve Shutoff control. When Gas leak is detected, the WiFi-DIO will activate the Relay to power the Gas Valve Shutoff Control to shut off the gas.
  • WiFi-DIO is Connected to the Blynk IoT server. DI status is sent to Blynk Server. Through Blynk, DO relay can also be controlled by the Smart phone remotely.
  • WiFi-DIO is WiFi Station device to connect to  WiFi Router. When the WiFi Router SSID can not be detected, WiFi-DO will auto-configure itself to a WiFi AP for initial configuration of a new WiFi SSID/password, etc., to be able to connect to the new WiFi Router.
  • A simple Web UI is provided for this application.

  • WiFi-DIO is used together with the Gas Detector and Gas Valve shutoff Controller as shown in the following Diagram.

  • The Blynk App is shown below.

Product Information (pdf file)

Anneal WiFi-DIO-GasShutoff-Blynk-DM



Hardware Features
Interface 1 DI and 1 DO ports 
Internal Relay Max. Voltage 250VAC/30VDC, Max. Current 10A
Wireless IEEE 802.11b/g/n  25dBm
Power Supply DC 12V
Dimension 110x70x35mm (LxWxH)
software Features
Message Transmit Protocol Blynk Protocol

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