Features:  Precise Temperature Control for everything from homebrewing fermentation to seeding heat mat to aquariums and terrariums. Heating and Cooling options allow for easy connection to heat mats or freezers.  Straight forward design makes operation a breeze. See your set temperature and your probe temperature with any easy to read screen. Universal outlet ensures ultimate compatibility with any device.  Flexible settings include heating and cooling, delay tiems, temperature control and slewing range to prevent rapid cycling. This termerature controller is flexible enough to work for a large variety of applications but simple enough to save your time and money. Specifications:  Working Voltage Range: AC90V-250V 50/60Hz Power Consumption& 65306;3w Relay: 10A/AC220V Temperature controlling range: -40~120°C (0°F~212°F) Resolution: 0.1°C(0.1°F) Accuracy: ±0.3°C& 65288;±0.3°F& 65289; Input: 1 NTC sensor (waterproof) Sensor wire: approx. 1.5m& 65288;56inch& 65289; (standard) Ambient requirements: temperature: -20~70°C; humidity: 20~90% (No condensate)