Support up to 19 rooms remote controlSupport 19 rooms remote control. It can be connected to electronic control lock, light, electric curtain, etc. To be able to unlock the door remotely, close the light, open or close the curtain, etc.Super SmallSuper small body, and occupies less space. The size of the receiving plate is about 3.5x3x3cm.Three Working ModesThe working mode can be changed by yourself: you can switch for a moment, alternate, lock the three modes you need.Torque code learning Torque code learning: It can work with any remote control with the same frequency, so you don't have to worry about losing the remote control anymore. (If the remote control is lost, buy one and the pairing with the circuit board is correct). Easy to use Very convenient to use, easy way to connect the schematicProduct Description Torque code learning It can be used with any remote with the same frequency, so you don't have to worry about losing the remote. Remote control It can be connected to electronic control locks, lights, electric curtains, etc. This way he can remotely open doors, turn off lights, open or close curtains, etc. Three operating modes You can change the working mode by yourself: you can temporarily change, rotate and lock the three required modes. Size Receipt card size: about 3.5 x 3 x 3 cm or 1.37 x 1.18 x 1.18 inch Fuse box size: 4 x 3.7 x 2.7cm or 1.57 x 1.45 x 1.06in packing list 1 x Receipt Card 1x fuse box 1 or 2 or 3 or 4 or 5xRemote