Anntem Wireless Remote Control Switch 433mhz rf Transmitter and Receiver kit dc 3.7v 5v 9v 12v Universal Battery Power Strip Mini Small Relay Switch Circuit Micro Controller Module

The module output is 2 sets of relay switches, standby mode, 2 sets of output "NO" and "COM" are disconnected, "NC" and "COM" are connected. Momentary moments. Instant control. Press the “A” button on the remote control to connect the two blue lines, release the “A” button,  the two blue lines are disconnected. Press the “B” button, on the remote control to connect the two yellow lines, release the “B” button,   the two  yellow  lines are disconnected.  Do not press the remote control "A", "B"  button at the same time.  multiple buttons transmit signals at the same time, which may cause interference and may not work properly, but will not be damaged. Visible distance, remote control signal coverage over 20 meters. RF signals can penetrate walls. The module remains in standby and the response is very fast. Since the product needs to consume current in the standby state, ?The module itself consumes less than 0.1 watt??if it is used for a long time, please select the power supply. Relay pins "NO" "NC" "COM" are a set of transfer switches, no power output, not positive, not negative, Isolated from the power supply circuit, is independent switch.Independent relay switching When the relay is working, NO and COM are connected. NC and COM are disconnected. When the relay is released, NO and COM are disconnected. NC and COM are connected.