A thermostat based on a LM35 IC as the temperature sensor. Comes with a built-in relay that allows turning on or off any load under control (up to 10A). The circuit incorporates temperature and hysteresis adjustment trimmer potentiometers. Temperature adjustment can be made between approx. 32 to 158 °F (0 to 70 °C) and hysteresis between approx. 0.9 to 3.6 °F (0.5 to 2 °C).