The Cooling Thermostat features: Day & night temperature settings, adjustable differential from +/- 2°F to +/- 6°F, LED output indicator light and an accurate external temperature probe. For use with exhaust fans. Housed in a rust, dust and water resistant plastic chassis, this controller will function in the harshest environments. Ratings: 12 Amp/120 Volt/60 Hz. Spartan Series Cooling Thermostat is designed for use with exhaust fans Day & night temperature settings: range 50°F to 100°F Adjustable temperature differential: +/- 2°F, 4°F or 6°F Plastic chassis resists dust, rust and moisture 5 foot piggyback cord set allows controller to be placed at plant canopy level LED output indicator light Accurate external temperature probe 12 Amps/ 120 Volts / 60 Hz. 1 year warranty