Feature: 1. Digital Display: Equipped with a large and clear LCD display screen, the temperature controller enables easier reading and control. 2. With Wide Range: From 0℃ to 65℃, the wide temperature control range will satisfy all your needs for different ambient temperature. 3. Useful Function: Also comes with cooling and heating control, temperature calibration and delay protection function, very practical. 4. Extensive Using: Can be widely applied in household refrigerator, water tank, boiler, industrial chiller, industrial equipment, etc. 5. 3 Way Measuring: There are 3pcs probe to ensure highly accurate sensing, and the 3 way heating relay has high efficiency as well. Specification: Item Type: Temperature Controller Model: HW-183D Working Voltage: AC220V ±10% 50Hz/60Hz Output Load: 3 heating relays, each 10A 220V AC. Power Consumption: ≤3W Working Environment: -10℃~50℃, RH≤90% Output Control: 3 way heating. Control Range: 0℃~65℃ Resolution: 1℃ Accuracy: ±2℃ Input Signal: 3 channel temperature sensor, 10K x 1m x 3 channels, (Approx. 1m / 3.28ft). . Package List: 1 x Temperature Controller3 x Probe Note: The output and input wires must be connected to the corresponding terminals in strict accordance with the wiring diagram.