Where are the programming buttons located on the CHAMBERLAIN HC300ML remote control unit?

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The CHAMBERLAIN HC300ML model is a motor reducer (control unit) for automatic gates, and not a handheld remote control. The programming buttons are located on the central control unit and must be accessible for commissioning and programming the remote controls.

The three programming buttons of the HC300ML are:

Button CH1: Allows you to program or erase a remote control on channel 1. Press this button so that the "Learn1" LED lights up red, then press a button on the remote control for about 5 seconds. The LED blinks when programming is complete.
Button CH2: Allows you to program or erase a remote control on channel 2. Proceed in the same way as with CH1: press CH2 until you see the LED light up, then press the button on the remote control. You can program up to 128 transmitters.
Button L1: Allows you to program the gate's travel (routes). This button is used during the initial commissioning to record the opening and closing positions of the gate, as well as the soft start settings (Soft-Stop).

These buttons are generally accessible by gently opening the control unit with a small screwdriver. Before any manipulation, ensure that the power supply (230 V) is turned off for safety reasons. The buttons are small and round, located on the circuit board near the corresponding programming LEDs ("Learn1", "Learn2" and "Learn").

To erase a programmed remote control, simply hold down the CH1 or CH2 button until the corresponding LED goes out. This operation is useful if you want to deactivate or replace a remote control.

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