and easy to install. Fine workmanship and perfect style. Specification: Buttons: 4 Buttons Frequency: 868MHz Distance: 30m-150m(Opener Area) Battery: Include Battery Type of programming: Face-to-face clone Compatibility Model: for HS1-868 for HS2-868 for HS4-868 for HSE2-868 for HSZ1-868 for HSZ2-868 for HSP4-868 for HSM2-868 for HSM4-868 for HSP4-C-868 for HSD2-A-868 for HSD2-C-868 It is only compatible with the for 868MHz blue button. How to program - It is very easy! Face to face copy your remote control Step 1. Clear the history code from duplicator 1. button A and B continuously until LED flash 3 times 2. Release button B (Keep pressing button A), and button B Slowly for 3 times, LED flash 3. Release button A, finish code clearance. .Copy code from mitter 1. Put duplicator of mitter, as close as possible. 2. and hold button A of mitter, then and hold button A of duplicator see the duplicator is LED flash 3. Release both buttons, finish code copy, copy other button in same way. Button A=Lock button Button B=Unlock button Material: Metal+ABS colour: Black+Silver Package Contents: 1 x 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.