Specifications: Using high-quality ABS material shell, this thermostat is waterproof and anti-rust, which has a long service life. The clear digital display screen and simple operation panel make it easy to operate. Featuring intelligent PID control mode and self-tuning function, it has quick response high accuracy, making this thermostat convenient and practical to operate. With relay and SSR output, it is universal and can be widely applied. It is suitable for all kinds of where temperature measurement and control are required, such as bathrooms, greenhouse vegetables, hatcheries, etc. Item Name: Thermostat Material: ABS Model: CHB702 Temperature Range: 0 Degree Celsius -400 Degree Celsius Installation Method: Fixed Bracket Working Voltage: 180V - 220V AC 50Hz Temperature Control Accuracy: 1.0 Regulation Mode: PID Control, Self-tuning Control Working Environment: 0 Degree Celsius -50 Degree Celsius Relative Humidity: 30% - 85%RH Input Mode: K/E/J/R/S/B/N/T/PT100/CU500 Adjustable Output Mode: Relay, SSR Features: Durable, Intelligent, High-accuracy, Digital Display Product Size: 7.2cm x 7.2cm x 8.1cm/2.83 x 2.83 x 3.19 (Approx.) Hole Size: 6.8cm x 6.8cm/2.68 x 2.68 (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 Thermostat 2 x Bracket 1 x English Manual 1 x Chinese Manual