The Linear FM316 is a battery heater kit from Linear PRO Access (GTO). DC Battery Heater Kit for Cold-Weather Gate Operator Battery Protection. Operating voltage: 18V AC (from RB570F transformer). Thermostat-controlled heating activates below 40 deg F (4 deg C). Compatible with Mighty Mule FM500, Mighty Mule FM502, GTO PRO-SW3000.
A: The FM316 thermostat activates and begins heating the battery when the temperature drops below 40 deg F (4 deg C), protecting battery performance in cold weather.
A: No, the FM316 is NOT compatible with solar-powered gate systems. It requires 18V AC power from the GTO RB570F transformer.
A: The transformer supports up to 500 ft of wire run for a single battery heater installation, or up to 300 ft for a dual battery heater installation.
A: Use double-sided tape to secure the tape thermostat (metal switch in clear plastic sleeve) to the top of the battery. Then connect the yellow wire pair in parallel to the first two 18V AC terminals on the RB570F transformer.
A: The FM316 is compatible with Mighty Mule FM500/FM502, PRO-SW3000/4000, PRO-SL1000/2000, and other Linear/GTO/Mighty Mule DC gate operators, but is NOT solar compatible.
