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These sensors are designed to monitor or control the percentage of relative humidity in atmosphere. They are used to maintain a constant humidity level in a room or a ventilation circuit. They are of the capacitive type.

Humidity measuring range: 10 to 95% Relative Humidity

Temperature range: -30+80°C

Storage temperature range: -40+85°C/ 0-100% RH

Accuracy and tolerances: +/-5% from 20 to 85%

Connection cable: 3 x AWG28, PVC80°C, UL 2854 style, external sleeve dia. 3mm, protected by a metal braid, 2 meter length.

NTC thermistors (whose resistance decreases with temperature) are cheap and interchangeable. Their high resistance makes them insensitive to the resistance of the measuring line and thus a two- wires connection is allowed. Polarity: without polarity