1. Confidentiality is strong 2. Individual key copy 3. Each key password is recorded alone 4. Continuous repetitive copy can be used a million times 5. Easy to install and , rolling code. Compatible Models: For HSM2 868, HSM4 868 for HS1 868,HS2 868,HS4 868 for HSE2 868 for HSZ1 868,HSZ2 868 for HSP4 868, HSP4-c 868 for HSD2-A 868,HSD2-c 868 It is only compatible with the blue button 868MHz Working voltage: 12V Working current: less than 27mA Launch distance: 100 meters (open space) How to operate: Same as the old remote control, need to be paired with the host For: Such as electric telescopic door remote control, road gate remote control, alarm remote control, etc. Wireless transmission distance: 10-150 (m)(open space) Color: Black-Grey & Blue Material: ABS Package Contents: 2 x Garage Door Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real