Low Water Pressure Sensor Switch for Ferroli Optimax Extrema Boiler (505.91512 / 39818770)Replacement Low Water Pressure Sensor Switch for Ferroli Boilers (505. 91512) Brand new, premium quality replacement low water pressure sensor switch for Ferroli boilers. A crucial safety device designed to monitor the water pressure within the boiler system, this switch helps prevent damage (low water pressure can cause the boiler to overheat, leading to potential damage to the system), prevents dangerous situations and triggers automatic shutdown

CM656GBS1B/01

WTW874B8SN/05

DYN10124DPG

B47CS28N0/38

HBG237BS0R/03

B1ECC0AN0/05

ZOF35621XK

856436601035 (ART364A+5)

WDX850130B

B57VR22N0B/08

WM14N030NL/25

TCD 83B 6H/Z