IOT 5V ESP12 WiFi 4 Channels Relay Module Remote Smart Home Mobile APP

Characteristics

1, Built in ESP-12 WIFI module and easy to program it in circuit with our multi function USB ESP Programmer you can buy it from this link
2, Transmission distance:
(1) In the open environment, the maximum transmission distance is 100m when the cell phone carry on the wifi module directly ;
(2) when the wifi module and cell phone carrying on the same router, the transmission distance depend on the router’s signal intensity;
3, On-board 4 channels 5V, 10 A / 250 v AC 10 A / 30 v DC relay, absorb 100000 times continuously, Module with diode effusion protection, short response time
4, check out tutorial to connect it with Blynk app