Siemens Building Technology 243-0018 Signal Selector An open limit switch typically

An open limit switch typically breaks the circuit to the gas valve

When you're dealing with a frozen evaporator coil on a Nordyne heat pump

Simplified Installation: Features multi-hole mounting brackets and clear terminal labeling for fast field replacement

Simplified Field Service: Designed for straightforward replacement

For use with 5" and 8" MP953A

Siemens Building Technology 243-0018 Signal Selector An open limit switch typicallyThe Siemens Building Technology 243 0018 Signal Selector is a high performance, dual input pneumatic logic device designed to compare two proportional air signals and transmit the higher value to downstream controllers or final control elements. As the direct replacement for RCC 1108, this highest pressure signal selector is essential for optimizing pneumatic control systems that require precise demand based logic, such as multi zone cooling