Basic and easy to use horticultural thermostat Day/night detection Can be set to operate heating or cooling equipment Adjustable day and night set points from 50 to 100ºF (10 to 38ºC) Precise external temperature sensor 20" cable: ±1°F (±0.6°C) Set point knobs are factory calibrated for accurate settings Smooth rotating knobs with continuous adjustment 120 V, 15 A, 2 HP load capacity