requiring a replacement like the 100241

ensuring the millivolt signal is strong enough to keep the standing pilot ignition system safety valve held open without nuisance shutoffs

F up to 400

the internal link interrupts the electrical circuit to protect high-value components from thermal damage

this model is rated for both air conditioning and heat pump duty

System Sensor B114LP Detector Els PW 17895 requiring a replacement like theSystem Sensor B114LP Gas Smoke Detection, 120Vac Nominal Voltage, 4 Wire, Ceiling Mounted, Smoke Detector Adapter Base with SPST NO and SPDT relay contacts and a 470 ohm current limiting resistor for 2151 Special Applications Duct Smoke Detector