Armstrong International A21191 Electrode Set R-410A The PopTop quick-release actuator interface

The PopTop quick-release actuator interface allows for one-handed attachment or removal

providing more accurate sensing and a longer operational lifespan than contact-based timers

The Ranco A12-701 Control is a versatile constant cut-in temperature control engineered for medium-temperature refrigeration systems requiring reliable off-cycle defrost

Durable Construction: Features silver contacts and heavy-duty terminals to resist pitting and ensure long-term mechanical reliability in high-cycle applications

making it ideal for aggressive media

Armstrong International A21191 Electrode Set R-410A The PopTop quick-release actuator interfaceThe Armstrong International A21191 Electrode Set is a critical OEM replacement part designed for high precision water level monitoring in industrial and commercial humidification systems. This authentic water level electrode set of 3 is specifically engineered for compatibility with the Armstrong HumidiClean HC Series (including models HC 4100, 4145, 4300, and 4500) and GFH Series humidifiers. By utilizing advanced conductivity sensing technology,