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Ranco Temperature Controllers | * | Ranco Controllers are easy to set | | * | Controller stores settings - no need to reset during power outages | | * | Extremely accurate for stable aquarium conditions |   
Accurately select the point temperature, differential, and heating/cooling modes to maintain stable aquarium temperature. Internal memory stores your programming during power outages. LCD provides a constant readout of sensed temperature. Temperature range is -30–220°F and differential adjustment is 1-30°F. Single Stage controls a single device (a heater or chiller) and Dual Stage controls two devices (1 heater and 1 chiller). Displays in °C or °F. Dual: for chillers up to 1/2 HP (115V), and heaters up to 500 watts. Single: for chillers up to 1/2 HP (115V), and heaters up to 1,000 watts.
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