2-Pack 4-Button Remote Control Key Fobs Compatible with Automatic Gate Garage Door Opener

All the swing and sliding gate openers can be operated by the M12 remote. Quick pairing allows you to add the remote to your gate opener system with the programming button on the control board. The M12 remote operates a third-party gate opener whose control board accepts Normally Open Dry Contact signal for push button, and connects with our ERM12 receiver (NOT incl.). The ERM12 can be powered by 9-24VDC from the control board or external power source.M12 remote control transmitter is a 4-button wireless controller and works with all the gate openers. Press the button to access your property. The advanced security code technology ensures the safety of the gate opener system. The remote control is built with a metal frame.M12 gate remote provides operation range of 20 meters. One gate opener can pair Max. 8 M12 remote controls on its own, and up to 250 with the ERM12 External Receiver (NOT incl.). Every time you press the remote control will make the gate operate between open-stop-close-stop-open. For sliding gate opener, button B is designed to activate the midway mode. The 2 x 3V lithium button cell CR2025 batteries (incl.) last up to 1 year at 5-10 activations per day.If there is no signal interruption, one M12 can operate countless gate openers simultaneously within the control range. In addition, one M12 is allowed to control multiple gate operators separately: (1) four swing gate openers (2) one sliding gate motor and two swing gate openers (3) one sliding gate motor, and two more sliding gate motors by adding two ERM12 to each control board respectively, and program button C/D for regular operation without midway mode.