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 ControllerProduct Model: CHB401 F K02-M ANMaterial: ABSWorking Voltage: 180V-220V AC 50HzTemperature Control Accuracy: 1.0Temperature Range: 0-400 Degree CelsiusControl Method: PID Control and Self-tuning ControlWorking Environment: 0~50 Degree CelsiusRelative Humidity: 30%~85%RHInput Mode: K/E/J/R/S/B/N/T/PT100/CU500 AdjustableOutput Mode: RelayFeatures: with Digital Display, Intelligent, DurableSize: 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 items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Temperature Controller CHB4011 x Fixing Buckle1 x Chinese User Manual1 x English User Manual