Red Lion Controls CSPID2SMProduct Attribute Attribute Value Series CSPID Series Type Temperature Control Modules Overview The Model CSPID series modules are full featured PID controllers designed for use with the Modular Controller Series. The CSPID1 is a single loop controller, while the CSPID2 is a dual loop controller. The design of the system provides a true modular PID control platform for multi zone control applications. The modules can accept a wide range of