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Dwyer Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F - Indoor Wall-Mount Transmitters
DwyerIndoor Wall-Mount Transmitters

Dwyer Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F

The Dwyer RHP-2N40 is an indoor wall-mount humidity transmitter with a 4 to 20 mA output. It operates over a temperature range of -4 °F to 140 °F and a relative humidity range of 0% to 100%. This sensor uses screw…

SKU 3G-OTH-179231

Brand
Dwyer
Item
Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F
Category
Indoor Wall-Mount Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHP-2N40
Type
Screw Terminals, -4°F to 140°F
Output
4 to 20 mA
Temperature Range
-4 °F to 140 °F
Relative Humidity Range
0%to 100%
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer RHP-2N40 is an indoor wall-mount humidity transmitter with a 4 to 20 mA output. It operates over a temperature range of -4 °F to 140 °F and a relative humidity range of 0% to 100%. This sensor uses screw terminals for electrical connections.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer indoor wall-mount transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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DWYER Humidity/Temperature Sensor: 4 to 20 mA, Solid State Band Gap, Screw Terminals, -4°F to 140°F (MPN RHP-3E44). Key specifications — Sensing Element Type: Solid State Band Gap; Temperature Accuracy: ±0.9°F @ 77°F; Output: 4 to 20 mA; Temperature Range: -4 °F to 140 °F.
DWYER Humidity/Temperature Sensor: 4 to 20 mA, Solid State Band Gap, Screw Terminals, -4°F to 140°F (MPN RHP-2N44). Key specifications — Sensing Element Type: Solid State Band Gap; Temperature Accuracy: ±0.9°F @ 77°F; Output: 4 to 20 mA; Temperature Range: -4 °F to 140 °F.
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DWYER Humidity/Temperature Sensor: 4 to 20 mA, Solid State Band Gap, Screw Terminals, -4°F to 140°F (MPN RHP-2N44). Key specifications — Sensing Element Type: Solid State Band Gap; Temperature Accuracy: ±0.9°F @ 77°F; Output: 4 to 20 mA; Temperature Range: -4 °F to 140 °F.