describe Wide applicationElectric projection screen, electric garage door, electric rolling shutter door, electric rolling shutter, etc. [Receiver control device] The receiver control device has the characteristics of high confidentiality, large storage capacity, stable performance and low power consumption. Bracket with remote control (transmitter)Wireless control, very convenient and convenient to use. You can turn the receiver on/off with the transmitter (remote control) anywhere within a reliable distance. Learning by codeCan be used with any remote control of the same frequency, no need to lose the remote control. (If you lose the remote, buy one to pair with the board.) Ultra Small BodyEasy to use, super small body, does not take up too much space. Product Description Wireless remote control, support a wide range Remote control distance up to 100m (open area) You can turn on/off the receiver with the transmitter (remote control) anywhere within a reliable distance. With remote control bracket (transmitter) Easy installation, direct replacement of old or bad ones Low power consumption, stable performance and large storage capacity Pairing code learning can be used with any remote control of the same frequency, so you don't need to lose the remote control. (If you lose the remote, buy one to pair with the board.) Remote control specifications: Frequency: 433 MHz Range: 100 (Open Area) Battery: 1*12V 23A (Included) Quantity: 1PCS Item Size: 12*4.2*1.6cm Item Weight: 42g Receiver Specifications: Channels: 2 Voltage Working voltage: AC220V10% working frequency : 433MHz Maximum load: 500W Size: 10.1*6.2*3cm Product weight: 94g packaging Size: about 15.5*12*5.5cm / 6.1*4.72*2.17in Package weight: about 150g / 5.29oz package