Set in rolling door, aluminum roller shutter Features: l Input learning mode: can increase new transmitters until 30 transmitters. l It includes a controller and 2 transmitters.. l Action mode: up, stop, down, off l State of art outlook design. Modern and smooth. l Remote control distance: 50 meter (test in space area) l Frequency: 433.92Mhz l This product can connect to our other safety and protection devices. l The switch in slide of the receiver. The switch function: connect up and down of wire to motor, if press up button, rolling door running down, just turn switch, rolling door will running up. l Temperature: 0¢XC~55¢XC l Humidity: 30% - 90% Transmitter Specification: Power: Alkaline battery DC12V Button: fluorescent in the dark. Slide cover: prevent unreasonable touch button Case material: plastic ABS Size: 6.43cm(L)*3.69(W)*1.43cm(H) Weight: 30g