Palmer Instruments' Solar Digital Industrial Thermometer
Ideal for those who prefer the readability of a digital thermometer, Palmer Solar Digital Industrial has a ½-in. high LCD screen. Powered by a built-in solar cell, its batteries never need replacing, and even a flashlight is enough to power it. This easy-to-read model is completely mercury-free for safe installation in a variety of environments. Models with 4-20-mA transmitter capability are available.