Intermatic 156T4042A Fireman Switch for Pool or Spa Heater
Intermatic 156T4042A Fireman Switch Kit Control For any Pool/Spa Heater and Filter Pump 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:- Used to control pool/spa heater
- Designed to turn OFF a gas fire pool/spa heater
- Reduces scale and lime deposits
- Extends the heater service life
- Eliminates the problem of pounding and knocking due to overheated water