GPK-W/R1000 SERIES TEMPERATURE & HUMIDITY CONTROL BOX Summary: GPK-W/R1000 Series Temperature & Humidity Control Box, matched with GP-T8800 Series Temperature Controller, is applicable to the control of temperature & humidity in the cooling or heating system. The sensor of the system detects the temperature of return water or return air before sending it to the temperature controller in the control box, which, through proportional Integral operation, puts out the increasing control signal to the regulating valve, controls its opening and regulates the medium flow to control return air or return water temperature. GPK-W/R1000 series control box could be used in conjunction with GPV-M?Series Electric Regulating Valve or other automatic control systems. Features and Technical Parameters: 1. High control accuracy, rapid response and stable operation. 2. Proportional integral operation inside the system. 3. Temperature & humidity setting through key-press. Temperature:0～140°C Humidity：0～100％ 4. Winter & summer mode selection. 5. Manual & automatic selection through the changeover switch. 6. Operating ambient temperature：0～50°C 7. Operating ambient humidity：10～90%RH, no moisture condensation. Temperature & Humidity Setting of the Control Box Temperature & humidity setting is realized through key-press on the temperature & humidity controller inside the control box, and then the controller should be locked to avoid temperature setting by unauthorized personnel.