Features: Heating: home heating, pet breeding, greenhouse planting, hatching machine, etc. Refrigeration: refrigerators, supermarket maintenance, air conditioning, etc. Smart: WiFi connection, remote control via smart phone or tablet computer. Safety: ABS flame retardant coating has passed many safety tests, making it safer and more reliable. Constant temperature mode: 2 outputs (can be connected to refrigeration equipment and heating equipment at the same time). Can Recognize Working ModeSpecifications:Name: smart WiFi temperature controllerModel: DTC-2201 Supply voltage: AC110 - 230V Temperature range: -40°C - +99°Measurement accuracy: ± 1C (-40°C - +70°C)Detection line length: 100cmTemperature control size: 93*56*34mm Output capacity: 10A - 250VAproduct weight: 91g Sensor: waterproof DS18B20 sensor (accuracy: ± 0.1°C)Package included:1*DTC-2201 WIFI thermostat1*DS18B20 sensor1*user manual,