General description This 2 Pack Garage Door Remote Control Transmitter is a reliable replacement for the Blue Button 868.3MHz garage door remotes, compatible with various models including HS4, HSE2, HSM2, HSM4, HS1, HS2, HSZ1, HSZ2, HSP4, HSP4-C, HSD2-A, and HSD2-C. Please note that it is not compatible with BiSecur series handheld transmitters. This cloned remote requires an original remote control to function properly, and it is essential that the original remote is fully operational for the cloning process to succeed. Technical specifications Frequency: 868.3MHz Material: ABS Color: Gray Dimensions: Compact design with a measurement error allowance of +/- 1-3cm Compatibility and accessories Compatible with Blue Button 868MHz garage door handheld transmitters: HSM4-868, HS4-868, HSM2-868, HS1-868, HS2-868, HSE2-868, HSZ1-868, HSZ2-868, HSP4-868, HSP4-C 868, HSD2-A 868, HSD2-C 868 Package Contents: 2 x remote control Usage Controls up to four different garage doors with its 4