Normally Open Switch
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.
of the Thermalarm III are:
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!
response to temperature changes. Airflow through
the opening at the bottom of the instrument case allows
the instrument to sense air temperature change more
range of the Thermalarm III is from 20° F to 110° F.