The Marvair LL357D4 lead/lag controller is a complete control package
designed to operate a fully or partially redundant air conditioning
system. It consists of a two-stage heat and cool digital thermostat and
a solid state timer. The LL357D4 insures equal run time on both air
conditioners while allowing the lag unit to assist upon demand.
Features
Solid state timer with 3.5 or 7 day changeover
Push button for manual changeover
LED indicates power on and identifies lead unit
Timing logic retention for up to one hour on power loss
Downloadable literature
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The Marvair LL357D4 lead/lag controller is a complete control package
designed to operate a fully or partially redundant air conditioning
system. It consists of a two-stage heat and cool digital thermostat and
a solid state timer. The LL357D4 insures equal run time on both air
conditioners while allowing the lag unit to assist upon demand.