W3230 Temperature ControllerThemo probe sensor (NTC10K-type)20A Digital LED DisplayThermostat with Heat/Cooling Instrument110-220V Specifications Power Supply AC 110V-220V Temperature Control Range -55℃ – 120℃ Resolution Ratio 0.1°C (-9.9 to 99.9); 1°C (other range) Color of Displaying Red / Blue Measurement accuracy ±0.1°C Control accuracy 0.1°C Sensor NTC10K Waterproof sensor Output Relay Contact Capacity 20A 12V / 10A 220V Environmental requirements -10-60°C, humidity 20%-85%RH Dimension 79mm x 43mm x 26mm (3.11” x 1.69” x 1.02”) Cutting Size 73mm*39mm (2.87” x 1.54”) Sensor wire 1 meter (39.37”) Features 1. Portable temperature controller. 2. LED display for better readability. 3. Wide temperature measuring range.(-50°C-110°C) 4. Heating or cooling control. 5. All parameters setting can be saved after short circuit. 6. Relay output. 7. High Control precision 0.1 centigrade 8. It can be used for domestic freezer, water tanks, refrigerator, industrial chiller, steamer, industrial equipment and other temperature-controlled system. Typical Setup Connect 110~220 volts A/C power supply and switchable equipment Controller displays the measured temperature Press the SET button once, and the temperature on the display will flash. Press +/- to set the desired temperature (press and hold +/- to quickly rise and lower setpoint) After completion, press SET to confirm Controller automatically energizes the relay on and off according to your settings. The output of the thermostat is 20A relay, capable of meeting various power loads. After connecting the power, the thermostat display screen shows the ambient temperature. Function description (long press of Set button) P0: Refrigeration or heating mode P1: Return difference setting P2: Maximum temperature setting upper limit P3: Minimum temperature setting lower limit P4: Temperature correction P5: Delay start time (unit: minute) FREE SHIPPING !!! SHIPPING We are not quite sure from where or how eBay gets its estimated shipment receipt date, but it seems to be varying from days to weeks for the same item!!! We strive to ship every order within 1 business day (We do NOT ship on weekends). We use (primarily) USPS 1st Class postage service with tracking. USPS does a GREAT job of handling our thousands of packages. They have a few glitches now and then but overall, they provide excellent service. Note that we are not privy to USPS tracking information beyond what you can retrieve via eBay or USPS. 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