Use for Remotely control a pulse signal to turn on/off lights, lamps, and other home appliances. Remotely control a pulse signal to turn on/off garage door, door accessOverviewRF433 remote control does not include batteryBattery Type 1 CR2032Battery Type 2 27A 12VObsThe relays are passive outputs (dry contact), no matter what power you supply in the input, the output does not have the same voltage, you also need to supply power in the output. The power supply in the output can only make the circuit board work. If you do not supply power in the output, the connected device cannot work. 1 CH OverviewThis product is a wireless DIY WiFi relay with 3 working modes 2 Working Mode Inching Mode Turn on one channel, the channel will automatically turn off after 0.7 seconds. Other channel is the same as the channel. Self- locking Each channel can be turned on/off separately. You can turn on/off all channels at the same time. 1-channel module supports inching mode/self- locking mode 2-channel module supports inching mode/self- locking mode/interlocked mode. Features