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PSA-01 is a 1 gang IoT development WiFi module allows users to DIY home automation. It easily turns traditional switch/socket into smart switch/socket.

PSA-01: ESP8266 based 1 Channel Smart Switch Module for Home Automation Devices

Model: IM150310002
PSA Module is a high integration and general-purpose 1 channel (1-gang) smart switch module. It's based on esp8266, designed for wifi socket and wifi switch. It acts like a transfer station which can receive and transfer messages via WIFI.

Product Description




This product is discontinued.

We shall still supply this module until 1 June, 2019.

Please open a ticket to place an order.





PSA Module is a high integration and general-purpose 1 channel (1-gang) smart switch module for DIY home automation.  It's a great product for home automation DIY fans and smart home manufacturers. The IoT development module is based on ESP8266, designed for socket and switch. The IoT module acts like a transfer station which can receive and transfer messages via WIFI. The IoT module helps users easily turn traditional ordinary switch or socket into an intelligent one, allowing the switch or socket be remotely controlled by App.

The WiFi IoT product has peripheral components such as external power supply, relay and button. Therefore, customers can use this module to develop and produce smart socket or smart switch without coding. Simply add it to your traditional socket/switch, they will become smart and can be remotely controlled by  APP eWeLink, which is available on both iOS and android. 

To develop a smart product, consumers only need to add a few components to the circuit. Cloud server, APP, PSA module are already there. 

Customers can add PSx (PSA/PSB) module to their devices, making them WIFI controllable instantly, no coding required. It is a perfect fit for home appliances manufacturers.


Successful Case


PCB Size22.86 x 20.32 x 1.0mm
Voltage supply 3.3V

Electrical Characteristics

Power supply voltage VDD 3 3.3 3.5 V
High input voltage VIH 0.8XVDD - VDD V
Low input voltage VIL 0 - 0.2XVDD V
Operation current for VDD IDD - - 215 mA

Cloud Support

  • Cookit Cloud

APP Support

  • eWeLink iOS version (App Store)
  • eWelink Android version (Google Play)

Product Advantages



Minimum System

PSA Demo Schematic



Please visit our wiki page for more information about this product. Any suggestions for improvement, such as correcting errors, adding more demo codes or tutorials, will be highly appreciated.

Technical support

For technical support, please open a ticket on Itead Support System.

Additional Information

Additional Information

Discontinued Yes
Link Wiki https://www.itead.cc/wiki/PSA_Smart_Switch_Module
EWeLink Support Yes
Module Type No
Weight 2.5 g
Model IM150310002
Board Size 20mm*15mm*3mm
Version b01-gl
Operation Level Digital 3.3V


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