Anntem RF Wireless Remote Control Switch Mini Small Micro Relay Switch Module dc 3.7v 5v 9v 12v Battery Power 433mhz Controller Line Switching Transfer

Relay pin "NO" "COM" is a set of switches, no power output, not positive, not negative, and control circuit isolation, is an independent switch. When the relay is working, NO and COM are connected. When the relay is released, NO and COM are disconnected.    Press the remote control “A” button for one second, NO and COM connection (module LED flashes once) Press the remote control “B” button for one second, and the NO and COM are disconnected (the module LED flashes twice)   If the power is turned off or the remote control is used to turn off, NO and COM are disconnected. The remote control is about 20 meters away from the open environment , RF signal can penetrate the wall This product uses a power saving program. It is very suitable for battery power. 1000mA capacity battery, standby can be more than 6 months. Turning into hibernation when standby can be very energy efficient.Because of this dormant program, Button time must be greater than 0.8 seconds.If you push the button too fast, you may occasionally lose control.