A two pen, 10" circular chart, temperature recording controller with
four switches, providing dual on-off control for heat-cool applications
on each pen or heat-cool-humidity applications. Available with 12, 24,
or 48 hour, or 7 day rotation times for 125VAC, 60 Hz operation, and others.
Seventeen operating ranges covering -30ºF to 1100ºF. Can be panel
or surface mounted.
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