The IceAlert Indicator Sign is designed to reduce the risk involved with costly slip, fall, and driving accidents related to icy conditions on your property. Alert pedestrians and motorists of dropping temperatures, and be aware that ice may be present or forming. Dial sign changes from reflective silver to reflective blue only when the potential for ice conditions exists. Under 36 degrees (F), the dial turns, and blue starts to become visible by 33 degrees (F). By freezing, 32 degrees (F) and below, the bright blue is fully shown. Activated by cold temperature, the visible blue indicates the potential for developing ice, especially if the surfaces are wet. When the temperature rises, the blue dial moves back to silver. Rugged design, the dial is encased in clearfaced, plastic case with mounting holes for wall mount or post mount with tamperproof fasteners (included). Selfcontained units do not require batteries or electronics.About ACCUFORM SIGNS:ACCUFORM SIGNS manufactures visual communications systems for facilities and the workplace. Our products include almost every type of safety sign, tag, and label, as well as an extensive line of Lockout/Tagout products. Accuform is widely considered the leading facility safety identification manufacturer in North America and beyond. For nearly 40 years, ACCUFORM SIGNS, headquartered in Brooksville, Florida, has continuously perfected and improved sign, tag and label manufacturing processes, safety procedures, environmental compliance, and distribution strategies to deliver worldclass visual communications to the workplace that protect, inform, and motivate the global workforce.Accuform continues to work hard to further build a reputation of quality, flexibility, convenience, industry knowledge, and customer service. We take pride in promoting Accuform signs, tags and labels as Safely Made in the U.S.A.