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J10-821 J10-821
Humidistat for Aftermarket

J10-808 Wall or Duct Mount Humidistat. Ranco® J10 Series are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. They are designed for use as internal components for portable humidifiers and dehumidifiers, and as wall mounted humidity controls for central systems. Made from high impact plastic with a brushed gold-tone dial plate and a beige cover. A nylon sensing element provides long life and accurate humidity control. The Wall/Duct Humidistat can be wall mounted or installed directly in a cold air return duct. The Wall Mount Dehumidistat is designed to be wall mounted and can be wired in series or parallel with a 24 volt nonelectric thermostat.

Electrical Rating 24 VAC / 60 VAC
Differentials 5% or 15% Relative Humidity
Control Cycle Ratings Automatic switch cycles @ 140°F (60°C) 50000. Manual dial shaft cycles 6000.
Ambient Temperature Limitations Switch Head: 32° to 140°F (0° to 60°C). Shipping: -22° to 150°F (-30° to 66°C).

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Electrical Rating 
Relative Humidity Range20 to 80%
Switch Action 
Canadian Model No. 
Power Source 
Maximum Load 
CommentsWall Mount (Horizontal)
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