4CH Channel 433Mhz Wireless Switch Long Wireless Remote Control Switch DC12V Relay Receiver Module Toggle Switch 1527 Chip Smart Home Automation (2 & 1 Receiver)

*Very convenient to use, simple wiring diagram connection way.;*Support remote control up to 16 pieces. It can connect to electronic control lock, intercom doorbell, garage door, light, electric curtain, household appliances, motor control, etc. So that it can remote unlock door, close light, open or close curtain,etc.;* Remote Control four buttons could respectively copy four different types of chips, that is a remote control can operate four different types of facilities.;* working mode can be changed by yourself: you can switch to momentary, toggle, latching three modes as you need.;*Learning pair code: it can work with any remote control with same frequency, so you needn't worry about losing remote control any more. (If remote control is lost, buy one and pair with PCB board is OK.)