For use in conjunction with remote proportional transmitters for proportional control of pneumatic actuated dampers, valves, etc., in air conditioning systems. The transmitter-receiver-controller system may be used to control temperature, humidity, or pressure.

• Nozzle and flapper relay type receiver controllers
• Direct acting. Field changeable to reverse acting
• Two pipe
• Proportional band: 2 1/2% to 40% of primary span
  Note: RKS4002 input 2 has a reverse acting reset only. For direct acting the output pressure increases as input 2 increases. For reverse acting the output pressure increases as input 2 decreases