H46 SPACE HUMIDISTAT  provides dehumidifying  control. 
Used with appliances, fans, heaters or Air conditioning humidity control. 

TRADELINE. DEHUMIDIFIER CONTROL WALL MTD. W/CASE AND COVER KNOB.
NYLON ELEMENT MAKES CIRCUIT ON RH INCREASE. 20-80%
Power Plug 6 Amp 120V     Pre-wired for 120VAC Black Cable