Wireless remote Buttons

Model No.: 0021134 (CQ-4)
Shell Color: black
Channel/Button: 4
Button Symbol: A, B, C, D
Operating Voltage: 6V (2 x CR2016 -3V button cell batteries, can be used for 12 months)
Operating Current: ≤12mA
Operating Frequency: 433Mhz
Encoding Chip: EV1527
Encoding Type: Learning code (up to 1 million codes, reducing code collision and unauthorized code scanning possibilities.)
Transmitting Distance: 50m / 150ft (theoretically)
The distance of 50m is theoretical, it shall be operated on open ground, with no barriers, and no interference. But in the practice, it will be hindered by trees, walls, or other constructions, and will be exposed to some interference by other signals. Therefore, the actual distance may or may not reach 50m.