304 SS Case Solar Powered Thermometer J739

These maintenance-free thermometers operate on solar power in light levels above 100 lux, and use a battery back-up below 100 lux. The calibration adjustment is on back of unit. The 48 inch L cable has no lead-containing pigments. Use panel-mount thermometers for front flange attachment. Use Wall-Mount thermometers for rear flange attachment. U-clamp thermometers are for mounting without flange attachment. Perfect for use in freezers and Walk-In coolers! replace existing 2 inch mechanical thermometers!. NSF (National Sanitation foundation) certified for food storage areas.