Current Sensing Ray Aprilaire #50

This Aprilaire #50 current sensing relay (minimum of 4 amps) has a voltage Range of 21-24 VAC, 50-60 Hz and simplifies humidifier installation on furnaces without accessory terminals. It also works for Honeywellreg; HE220, HE225, HE260, HE265, HE360 and HE365 humidifiers.