The Wrap On 18500 thermostat is for use with non-automatic Gro-Quick Soil Warming Cables. The 18500 model has adjustable temperature settings from 40F to 100F and is GFCI protected.
The Wrap On 18500 thermostat is designed for use with the Gro Quick soil warming cables but it can also be used to control portable electric heaters and heat lamps.
Wrap On 18500 Adjustable Thermostat Installation Manual