1,The onboard smart IoT WiFi module is simple to configure and powerful;2,Support \Tuya\ mobile phone APP through WIFI and 4G\/3G network remote control;3,When using mobile phone APP control, it supports multiple control methods such as timing, delay, device sharing, smart scenes, etc.;4, Support real-time feedback of switch status when both the device and APP are online;5,Support two modes of self-locking and timing (including countdown, cycle timing, random timing, and jog switch),6,Onboard 4 5V, 10A\/250V AC 10A\/30V DC relays, which can be activated continuously for 100,000 times, have diode effusion protection, and have a short response time;7,Power supply voltage: DC5V\/7-28V, output voltage: AC 90-250V;8,Number of channels: 4 channels, the maximum overcurrent per channel: 10A, the maximum total power of 4 channels: 3200W;9,Onboard WIFI status indicator, relay switch indicator;10,The PCB board and materials used in the smart switch adopt lead-free technology, with high-quality materials, environmental protection and safety.Interface description:1,7-28V\/GND\/5V: DC 7-28V power supply or DC 5V power supply;2,Local buttons: S1, S2, S3, S4 correspond to control channel 1, channel 2, channel 3, and channel 4 respectively;3,WIFI status indicator (blue light): flashing means waiting for pairing,4,D1, D5, D9, D11 are the four relay output status indicators;5,Relay output terminal:NO: always start;COM: public end;NC: normally closed end;Colour:greenMaterial:plasticPackage Contents:1 * Relay ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.