Intermatic - 156T4042A - Fireman Switch 120V internal transformer Adding a DUAL® two-wire module

Adding a DUAL® two-wire module can even expand station capability to 48

Input Voltage Range(s)

223 Unit Carton Length (in) 7

Simplified Dial Programming

Intermatic - 156T4042A - Fireman Switch 120V internal transformer Adding a DUAL® two-wire moduleInstall Manual The 156T4042A Fireman Switch provides coordinated control for any pool spa heater and filter pump. It is designed to turn OFF a gas fired pool spa heater approximately 20 minutes before the filter pump shuts down. This eliminates the problem of pounding and knocking caused by overheated water and also reduces scale and lime deposits and extends service life of the heater. Features: Coordinated control for pool spa heaters and filter