(based on 1 rating)

Generalaire M3 Select-Control Humidistat (Part # 7015) The M3 humidistat provides low voltage control of humidifiers installed in central heating systems. The humidistat has a SPST switch and is designed for wall mounting in the living area, or mounting on the return air duct. Includes mounting template, owners manual, mounting screws, foam seal 2-Year Factory Warranty RANGE: 10% to 60% RH ELECTRICAL RATING: 30 VAC / 60 VA Dimensions: 4-7/8" W X 3" H X 1-5/8" D Duct Cutout Dimensions: 3-3/4" W X 2-3/8" H