Warrick 26NMB1A0F Control R-22 and—with the addition of a

and—with the addition of a 500-ohm resistor—4-20 mA current loops

this switch is rated for dual voltage applications up to 250V

While primarily designed for Lennox furnace models

and pressure diagnostics

Does this control require a power source to operate the sensing mechanism

Warrick 26NMB1A0F Control R-22 and—with the addition of aThe Warrick 26NMB1A0F is a precision engineered liquid level control designed for demanding boiler and water management applications. Operating on 120Vac supply voltage, this low water cutoff plug in module utilizes a 10,000 ohm direct acting mode for high sensitivity detection. The 11 pin octal socket style ensures a secure connection for the SPDT (1 NO 1 NC) relay, while the manual reset with power outage feature prevents automatic restarts