Number of channels: 1/4 Battery: 12V 23A Installation: wireless Wireless transmission distance: 50-150 meters (open space) Frequency: 40.685MHz Button color: red Compatible model: Dickert MAHS40-01 Purchase tips: Check the frequency on the back of the remote control, it must be 40.685MHz. Check the button color, which is red. Check the model number of the remote control, which is MAHS40-01. Programming instructions: The transmitter and receiver must be coded to match. 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 compatibility before purchase. Product updates may occur, and slight variations in color or design between batches are possible. These differences do not affect functionality. Color: as shown in photo Material: plastic Package contents: 1 x Garage Door Remote Control Note: Other items not included. Lighting and display settings may cause slight color differences between the image and the actual item. Measurement error allowance: +/- 1-3 cm.