The Thermalarm III uses hermetically sealed magnetic switches to trigger an alarm condition, eliminating concerns with corrosion and particle contamination of the contacts. This feature is of particular importance in applications where chemical fumes, high humidity and airborne dust and dirt particles are present.

Easy set-hand adjustment. The adjustable set-hands extend through the bottom of the instrument housing, so you can use your fingertips to adjust the high and low limits - no tools needed!
Quick response to temperature changes. Airflow through the opening at the bottom of the instrument case allows the instrument to sense air temperature change more rapidly.

Range: 20°F to 110°F / -5 to 40°C

Condition: used, very good

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