Dickert MAHS40 MAHS40-01 MAHS40-04 40.685MHz Remote Control Specifications: Number of channels: 1 Size: 75*37*15mm Product material: ABS Product weight: 30 g Battery: 12V 23A Installation: wireless Wireless transmission distance: 50-150 (m). (open space) Frequency:Dickert MAHS40 40.685MHz red buttons. Only Compatible With Dickert MAHS40 40.685MHz Dickert MAHS40-01 Dickert MAHS40-04 Include * Remote Control * Battery * Keychain * English Manual Programming Manual The transmitter and receiver understand" each other, the code must be set as follows. - Remove the battery cover by sliding it in the direction of the keyring tab. - Set the dip switch up/down same as your used remote control or the receiver. Physical photos