1、Support for temperature control according to temperature set value + return difference 2、Support for refrigerating mode and heating mode convertible, more practical to use 3、The temperature setting range can be limited, it is easy and convenient to operate 4、This Temperature Controller is made of high quality material, it is durable for long time use 5、With the functions of temperature correction, sensor failure alarm and control output protection delay Features: Support for temperature control according to temperature set value + return difference. Support for refrigerating mode and heating mode convertible, more practical to use. The temperature setting range can be limited, it is easy and convenient to operate. This Temperature Controller is made of high quality material, it is durable for long time use. With the functions of temperature correction, sensor failure alarm and control output protection delay. Specification: Condition: 100% Brand New Item Type: Temperature Controller Model: STC-100A Material: ABS Mounting Hole Size: Approx. 71 x 29 mm / 2.8 x 1.1 in Operating Environment Temperature: 0℃-60℃ Relative Humidity: No more than 85% (no condensation) Power Consumption: Less than 3W Temperature Measurement Range: -50℃-99℃ Resolution: 1℃ Accuracy: ±1℃ Output Relay Contact Capacity: 10A/220VAC Package List: 1 x Temperature Controller 1 x Instruction Manual 1 x Cable