UV Warning Signal™ - Solar Light

Model 511 UV Warning Signal™

The Model 511 UV Warning Signal is designed to provide a real-time indication of the sun’s UV intensity in an easy to read package, designed specifically for outdoor areas such as golf courses, country clubs, school yards, outdoor sporting events, amusement parks, ski slopes, beaches, and swimming pools.



The UV Warning Signal Model 511 is designed to provide a real-time indication of the sun’s UV intensity in an easy to read package.  It’s great for outdoor areas such as golf courses, country clubs, school yards, outdoor sporting events, amusement parks, ski slopes, beaches, and swimming pools.

The UV Warning Signal takes the sun’s radiation, and changes the UV photons of light in the “skin sensitive range” into an electric signal that corresponds to the World Health Organization and US EPA UV Index exposure categories.  Those exposure categories are represented on the UV Warning Signal by five colored indicator lights.  When in operation, the UV Warning Signal illuminates the indicator light that corresponds to the level of UV radiation being received by the sensor.

The heart of the unit is the Solar Light Erythema Weighted Sensor.  This sensor is remote mounted for indoor installations of the UV Warning Signal and can be mounted either remotely or directly on top of the 511 chassis for outdoor installations.  Hardware is provided for mounting the sensor remotely, and also included for mounting the 511 to a wall or pole.  Walls and poles are not supplied.

A clear day in the Western US during summer can experience UV Index values as high as 10+.  During the winter, it can also reach levels of concern.  This means a person with Type II skin, unprotected, can burn in a little as 10-15 minutes.  In the Northwest part of the US during the summer, the UV Index can reach 9+, while winter values can reach 3+.  These are typical average values.


  • Weatherproof: NEMA 4X / IP66 rated.
  • Flexible Configuration: Outdoor/Indoor signal, Sensor directly or remotely mounted.
  • High Visibility: Super-bright LEDs are visible up to 50 meters in direct sunlight.
  • Simple Operation: UV Index value is categorized into one of five color coded exposure categories.
  • International Standards: UV Index values displayed in accordance with World Health Organization and US EPA guidelines.
  • Stable Calibration: Extended calibration interval required every two years.

    Power source:  Low voltage 24 VAC power requirement allows for safe and simple installation and operation.

Exposure Category UV Index Range Color Recommended Action
Extreme 11+ Purple Avoid being outside during mid-day hours.

Seek shade.  Shirt, sunscreen and hat must be worn.

Very High 8-10 Red
High 6-7 Orange Seek shade during mid-day hours.

Shirt, sunscreen, and hat should be worn.

Moderate 3-5 Yellow
Low 0-2 Green No protection required.

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7/8” (2.2 cm)
1/2” Trade Size (1.27 cm)

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Model 511 UV Warning Signal™

User Manual

Model 511 UV Warning Signal™ User Manual


SOLAR LIGHT COMPANY warrants that the equipment has been carefully tested, inspected and left the Factory in proper working condition, free of visible defects.  SOLAR LIGHT COMPANY warrants the equipment to be free from defects in material and workmanship, under normal use and operation, for a period of one (1) year after the date of initial operation, or demonstration; or eighteen (18) months from the date of shipment from the Factory; or whichever occurs first. The warranty is limited to the free replacement of all-defective parts and free labor during the first year of warranty.  Defective parts replaced under this warranty shall become the property of SOLAR LIGHT COMPANY. The above stated Warranty is subject to the following conditions: Equipment being installed within the United States of America, Canada, or sold by authorized SOLAR LIGHT COMPANY representatives or their agents outside the continental United States. The equipment being installed is operated and maintained in accordance with SOLAR LIGHT COMPANY’s operating instructions, maintenance instructions and specifications. Utilization of only SOLAR LIGHT COMPANY’s authorized parts and components.  The utilization of a duly authorized representative for all work performed on SOLAR LIGHT COMPANY equipment during the warranty period.  Any variation(s) to the above warranty must be in writing and mutually acceptable by SOLAR LIGHT COMPANY and the customer. The warranty shall not apply to damages resulting from errors in installation, nor shall it apply to any equipment, which has been subject to damages, alterations or misuse by the purchaser.  Parts of the equipment, which would be generally considered as expendable service items during normal use, such as fuses, lamps, detector shields, etc., are not covered under the warranty. THERE ARE NO WARRANTIES, WHICH EXTEND BEYOND THIS DESCRIPTION, AND EXPRESSLY NO IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SOLAR LIGHT COMPANY BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR ANTICIPATED LOSS OF PROFITS SUFFERED BY THE PURCHASER. Extended Warranty Plans are also available.