Complete machine patch, wave soldering, stable performance, good consistency.Embedded CPU chip (MCU), more intelligent, lower power consumption.Automatic power set memory (MCU built-in EEPROM memory unit).Control accuracy of 0.1 degrees Celsius.Have been tested for stability, consistency and reliability.Specifications:Model: W1209Temperature Control mode: ON / OFFTemperature Range :-50 - 110 degree centigradeResolution: When temperature is 0.1 degree, the resolution is -9.9~99.9, other temperature segment is 1 degree.Control Accuracy: 0.1 degreeHysteresis Accuracy: 0.1 degreeRefresh Rate: 0.5sHigh Temperature Protection 0 - 110 degree centigradeSupply Voltage: DC 12VStatic Current: Less than 35MA, attract current less than 65MAOutput Voltage: DC 12VOutput Power: 20A relayMeasurement Input: NTC (10K 0.5%) Waterproof SensorEnvironmental Requirements: -10 - 60 degree centigrade; Humidity 20% - 85%Colour:GreenMaterial:Plastic + MetalSize:48.5x40mmPackage Contents:2x Digital Temp Controller2x shellOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.