Features - Protects plants by turning off lighting or CO2 generators when temperature is too high - Smooth rotating knobs with continuous adjustment - Restart delay adjustable from 0 to 20 minutes to protect lighting equipment - High temperature limit adjustable from 70 to 120 °F (21 to 49°C) - Factory calibrated set knobs for accurate settings - Precise external temperature sensor on 20 inch cable to place at plants top level: ±1.8°F (±1°C) - 120 V, maximum outlet current 15 A, 2 HP - CSA/UL compliant