Specifications Hign-concerned Chemical:None Model Number:DICKERT Origin:Mainland China Certification:CE Name:Dickert garage remote control Frequency:27.015MHz Work for:Dickert MAHS40 Red Buttons Buttons:1 or 4 Model 1:Dickert MAHS27-01 Model 2:Dickert MAHS27-04 Note 1:Not compatiel with Dickert FHS20-01-04 Note 2:Not compatiel with Dickert MAHS40 Dickert MAHS27 MAHS27-01 MAHS27-04 27.015MHz 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 MAHS27 27.015MHz red buttons. Only Compatible With Dickert MAHS27 27.015MHz Dickert MAHS27-01 Dickert MAHS27-04 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. Include * Remote Control * Battery * Keychain * English Manual