Number of channels: 1/4 Battery: 12V 23A Installation: wireless Wireless transmission distance: 50-150 meters (open space) Frequency: 40.685MHz Compatible with Dickert MAHS40 40.685MHz and Dickert MAHS40-01 models only Purchase Tips: Check the frequency on the back of the remote control; it must be 40.685MHz Check the color of the button, which is red Check the model number of the remote control, which is MAHS40-01 Programming Instructions: The transmitter and receiver must be synchronized by matching the dip switch settings Remove the battery cover by sliding it in the direction of the keyring tab Set the dip switch up or down to match your existing remote control or receiver Note: Installation guide not included; professional installation is recommended Please verify all specifications to ensure compatibility Product design may vary slightly between batches; such variations do not affect functionality Color: as shown in photo Material: plastic Package Contents: 1 x Garage Door Remote Control Note: Light reflection and display differences may cause slight color variation between image and actual item Measurement error allowed: +/- 1-3 cm