Brand new and high quality RF wireless remote control 1 channel mini transmitter for intelligent home. With the advantage of simple matching, it's safe and reliable for the modification of ancillary products. Quickly respond and send out signal to the mating unit for easy control when you press the button. Designed with one button, it is easy to use. And the remote control distance can reach 20~80m in the open area. Widely used in remote control switch, remote control garage door, remote control electric shutter, alarm unit, industrial control products, etc. Specifications: Condition: 100% Brand New Button Color: Black Operating Frequency: 433MHZ Encode: EV1527 Channel: 1 CH Buttons: 1 Button Battery: 6V(2 * CR2016 Battery Button)(not included) Remote Control Distance: 20~80m / 65.6~262.4ft Item Size: Approx. 4.5 * 4.5 * 1.3cm / 1.77 * 1.77 * 0.51in Button Diameter: Approx. 3cm / 1.18in Package Weight: Approx. 19g Package Included:1 * Wireless Remote Transmitter