Installation manual

Connecting Accessories

The Mighty Mule® 502 can accept NORMALLY OPEN CONTACT accessories, such as; Push Button Entry Devices

and Key Pads.

Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular gate.

Make sure the power to the opener is turned

off before connecting safety device wiring to the

terminal blocks. Unplugging the transformer

does not turn power to the opener OFF.

Accessory Input Connection:

Connect one of the accessory wires to the

COMMON (COM)

terminal and the other to the

CYCLE CLOSE

terminal on the

Mighty Mule® 502 control board.

Each activation of the accessory will cause the

gate to cycle as follows:

OPEN STOP CLOSE STOP

If not connecting accessories skip to next section.

Wire from Accessory

(push button, key pad, etc.)

RECEIVER

COM COM

CYCLE

SAFETY

EXIT/

OPEN

SHADOW

LOOP

EDGE

OPEN

EDGE

BLKGRN RED

STALL FORCE