Features: *Wide Application: Electric projection screen, electric garage doors, electric rolling door, electric roller shutters, etc. *The receiving control device is characterized by high confidentiality, large storage capacity, stable performance and low power consumption. *Learning pair code: it can work with any remote control with the same frequency,so you needn't worry about losing remote control any more. (If the remote control is lost, buy one and pair with the PCB board is OK.) *With a remote control(transmitter) holder, very convenient and practical to use. *Easy to use,super small body, does not take up too much space. Specifications: Receiver Specifications: Channels:2 Operating Voltage: AC220V10% Operating frequency: 433MHz Maximum load: 500W Item size:10.1*6.2*3cm Item weight:94g Remote Control Specifications: Frequency: 433MHz Range: 100 (open area) Battery: 1*12V 23A (included) Quantity: 1PCS Item size:12*4.2*1.6cm Item weight:42g Package Information: Package Size: Approx. 15.5*12*5.5cm/6.1*4.72*2.17in Package Weight: Approx. 150g/5.29oz Package List: 1* Receiver Board 1* Remote Controller 1*Remote Controller Holder