Usage Tips:The ZL-6x0A-R series is a thermostat with RS485 communication. The device is suitable for controlling cold storage, seafood storage, water heaters, etc. Cooling or heating mode. Regular or intellectual thaw. Fan control. Temperature calibration. High or low over temperature warning. Temperature output delay protection. Sensor failure warning. Buzzer warning. External warning input. RS485 communication. Sensor line: 1.5 meters long (including sensor) Sensor: NTC Setting range: -40-120 Celsius Display range: -50-130 Celsius Power: 185-245Vac, 50 or 60Hz Load: 3A, 10A, 250Vac (resistance) Storage temperature -30-70 Celsius Working temperature: -10-45 Celsius Voltage: 220Vac Work: relative humidity 5-85 percent , no condensation Protection level: IP65 (front only) Colour: Black Material: Plastic Size: L78 x W34.5 x D71 (mm) Installation drilling: L71 x W29 (mm) Package Contents: 1 x digital thermostat 1 x copper head sensor Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: 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.