This old fashioned remote control is obsolete and has been replaced by MK712 Sync Kit.
The sync kit contains one pre-wired receiver and two key ring, clean-design remotes. The installation of the receiver is very easy: simply connect the three wires to the three connectors at the back of the drive unit. Then it's done! The pre-programmed new remote controls can be used immediately.
Your existing remotes can still be used along with the new remotes. Just you will prefer to carry the smaller and lighter new ones.
This one is upgraded to MK712.