This Temperature Controller is an excellent and convenient multifunction device for controlling temperature in Aquariums. The stability of aquarium temperature is one of the crucial factors that contributes to the health and safety of your fish. By utilizing the temperature controller, you can provide an environment with optimal temperature for your fish. This advanced temperature controller can measure and control temperature from -58 to 194 °F. This device is also suitable for Laboratories,Gardening,livestock and other temperature-controlled systems. The majority of machine components using SMT placement machines, sophisticated technology. Temperature Measuring Range: -58 ~ 194 deg F Control temperature range: -58 ~ 194 deg F Temperature measuring difference: ±1 deg F Resolution: 1 deg F Accuracy: ± 1 deg F (-50 ~ 70 deg F) Sensor Type: NTC (10K/3435) Working voltage: 12V DC Power consumption: < 3W Relay contact Current: Rated 5A Data retention: Yes Working temperature: 32 ~ 122 deg F Storage temperature: -14 ~ 140 deg F About size: 86 x 71 x 29 mm ( L*W*H ) Install Window Size: 70.5 x 28.5 mm