Apollo Horticulture 68-108&deg;F Digital Heat Mat Thermostat Controller 1 - Apollo Horticulture 68-108F Digital Heat Mat Thermostat Controller Dimensions: 5.25" x 3" x 1.5" / 75" Power Cord Length / 74" Thermostat Cord Length Specs: 120 Volts / 8.3 Max Amps / 16.2 Watt Power Draw Provide constant optimum temperature between 68-108F / 20-42C depending on your specific crop. Easy to use system with an Illuminated indicator makes this your ideal Heat Mat Thermostat.