XY501 series instrument: four-digit LED digital display, measurement accuracy 0.3%. The maximum resolution of thermocouple and thermal resistor input is 0.1 degrees, and the maximum resolution of analog input is 0.001 degrees. Universal input, the panel supports customers to choose 10 different types of thermocouple and thermal resistor input, and the thermocouple and thermal resistor of the instrument input signal can be freely set. Can be used for both heating and cooling control Auto-tuning function can automatically find the best PID parameters Display temperature in Celsius or Fahrenheit Four-digit LED display up to "9999" Used for kiln, furnace, oven, incubator temperature control Used in industry to control and monitor process temperature Short shell relay contacts + solid-state relay (SSR) voltage output (only one set of output is supported) Color: Black Material: ABS + electronic components Dimensions: 5.0 cm x 5.0 cm x 10.0 cm Package Contents: 1x PID Digital Thermostat 1x User Manual Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowable error is +/- 1-3 cm.