{"product_id":"johnson-controls-w42aa-1c-low-or-line-voltage-humidistat","title":"Johnson Controls W42AA-1C Low or Line Voltage Humidistat","description":"\u003cp\u003eThe W42AA humidistat provides single pole, double-throw control for use on low or line voltage applications.\u003c\/p\u003e\n\u003cp\u003eThe humidistat's terminals are marked for easy wiring. The 'C' terminal is common. The circuit between 'C' and 'L' terminals closes on a decrease in relative humidity.\u003c\/p\u003e\n\u003cp\u003eThe circuit between 'C' and 'H' terminals closes on an increase in relative humidity. The humidistat?s sensing element consists of approximately 150 strands of carefully selected and processed human hair -- proven to be the most sensitive and stable material known for humidity control. An exclusive tension release device keeps the hair strands from being damaged by extreme humidity or mechanical strain. The sensing element is mounted vertically to minimize surface contamination by dust or foreign material.\u003c\/p\u003e\n\u003cp\u003eThe humidistat mounts on a standard outlet box or directly to a flat surface where permitted by electrical codes.\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003cbr\u003eThree-wire SPDT switch permits control of humidifying or dehumidifying equipment or both with one control\u003cbr\u003eStable and accurate human hair sensing element\u003cbr\u003eEasy to read dial is adjustable over a range of 10 to 90% RH\u003cbr\u003eConcealed dial lock screw for sealed setting\u003cbr\u003eSeparable mounting plate with mounting screws attached, saving installation time.\u003cbr\u003eAttractive contemporary styling\u003c\/p\u003e","brand":"FIRE ALARM SYS","offers":[{"title":"Default Title","offer_id":52273575559488,"sku":"W42AA-1C","price":110.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/6466\/0032\/files\/W42AA-1C.webp?v=1781817229","url":"https:\/\/firealarmsys.com\/products\/johnson-controls-w42aa-1c-low-or-line-voltage-humidistat","provider":"FIRE ALARM SYS","version":"1.0","type":"link"}