Carevas Smart Home 433Mhz DC 1CH Wireless Remote Switch Relay Receiver Universal Remote Control Switch Module and RF Remote Controls 1527

*Very convenient to use, simple wiring diagram connection way. *Support remote control up to 19 pieces. It can connect to the electronic control lock, , electric curtain, etc. So that it can remote unlock the door, close the , open or close the curtain, etc. *Super small body, and it occupies less space. The receiver board size is only about 3.5*3*3cm. *The working mode can be changed by yourself: you can switch to momentary, toggle, latching three modes as you need. *Learni