Specifications: It has digital display, which is clear and easy to read. Removable housing is convenient for installation. With intelligent PID control, it is much more precise and accurate. Type: Temperature Controller Product Model: CHB401 F K02-M AN Material: ABS Working Voltage: 180V-220V AC 50Hz Temperature Control Accuracy: 1.0 Temperature Range: 0-400 Degree Celsius Control Method: PID Control and Self-tuning Control Working Environment: 0~50 Degree Celsius Relative Humidity: 30%~85%RH Input Mode: K/E/J/R/S/B/N/T/PT100/CU500 Adjustable Output Mode: Relay Features: with Digital Display, Intelligent, Durable Size: 8.6cm x 4.8cm x 4.8cm/3.38" x 1.89" x 1.89" (Approx.) Opening Hole Size: 4.5cm x 4.5cm/1.77" x 1.77", Panel Size: 4.8cm x 4.8cm/1.89" x 1.89" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Temperature Controller CHB401 1 x Fixing Buckle 1 x Chinese User Manual 1 x English User Manual