This advanced device is used for temperature control in aquariums. Use in fish machines, terrariums, vivariums, chicken incubators, etc. Wide temperature control range. Double heating and cooling function. Temperature measurement function. Large and clear LCD display. Mini and lightweight design. Easy to install, simple operation. The thermostat can choose different applicable voltage or energy according to the actual use of the thermostat. Convenient and safe to use. Features: This advanced device is used for temperature control in aquariums. Use in seafood machines, terrariums, vivariums, chicken incubators etc. Wide temperature control range. Dual heating and cooling function. Temperature measurement function. Large and clear LCD display. Mini and light weight design. Easy to install, easy to use. Specifications: Power supply: 12V, 24V, 220V (optional) Temperature measuring range: -50 C - 110 C. Temperature control range: -50 C - 110 C. Temperature control accuracy: 0.1C. Temperature measurement accuracy: 0.2C. Measuring input: NTC10K Mounting hole diameter: 4 mm Item size: 60 x 45 x 31 mm / 2.36 x 1.77 x 1.22 inches Item weight: 45 g / 1.6 oz Package size: 70 x 50 x 40 mm / 2.76 x 1.97 x 1.57 inches Package weight: 50g / 1.8oz Package contents: 1 x temperature controller.