Specification: Item Type: WiFi Relay Module Board Size: Approx. 45 x 28mm / 1.8 x 1.1in Board Function Description: IN+, IN-: 5V power input TX, RX,
Operating Voltage: DC5V, Communication: WIFI (ESP8266 Module), Transmission Distance: max 400m , Description:This is 5V wifi relay module v4.0 for
5V WiFi Relay Module V4.0 For ESP8266 ESP01S / ESP01 IOT Smart Home Remote Control Switch, Relay Module - RS2376
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