even in harsh environments

When replacing Hart or Proctor switches

photoelectric (PSD)

Whether you are verifying lighting run times or confirming status on unit vents and recirculating pumps

Hydrolevel EL1214 Sensing Probe Els PW 17895 even in harsh environmentsThe Hydrolevel EL1214 (also identified as Part Number 45 214) is a heavy duty 3 4" NPT standard ceramic sensing probe engineered for precise liquid level detection in residential and light commercial boiler systems. Featuring a 2 7 8" insertion length (inside dimension), this probe is a critical component for low water cut off (LWCO) safety controls, providing the essential conductance signal required to prevent dry firing and catastrophic heat