| Genuine Aprilaire 50 Sensing Relay |
 The Aprilaire 50 current sensing relay is used to turn any humidifier on when the indoor blower of the air handler is energized. The relay makes installing any humidifier easier than ever before. Designed to be installed in series with the 24 volt circuit. Supplemental Information: Installation Guide for Models 50 and 51 Current Sensing Relays Related Products: Aprilaire 400A Humidifier Aprilaire 400M Humidifier Aprilaire 500A Humidifier Aprilaire 500M Humidifier Aprilaire 600A Humidifier Aprilaire 600M Humidifier Aprilaire 800 Steam Humidifier Price: 29.99 |