MC101 series instruments: Four-digit LED digital display with measurement accuracy of 0.3%. Maximum resolution of 0.1 at thermocouple and thermal resistance input, and 0.001 at analog input. Universal input supports 10 different types of thermocouples and RTD inputs selectable via panel settings. Thermocouple and thermal resistance input signals can be configured freely. Suitable for both heating and cooling control applications. Auto-tune function automatically determines optimal PID parameters. Displays temperature in Celsius (C) or Fahrenheit (F). Four-digit LED display range up to "9999". Ideal for kilns, furnaces, ovens, and incubators. Used across various industries for process temperature monitoring and control. Short shell design. Output options include relay contact and solid-state relay (SSR) voltage output (single group output only). Color: Black. Material: ABS plastic and electronic components. Dimensions: 5.0 cm x 5.0 cm x 10.0 cm. Package includes: 1x PID Digital Temperature Controller, 1x English User Manual. Product sold separately; other items not included. Note: Lighting conditions and display settings may cause slight color variations between image and actual product. Measurement tolerance: 13 cm.