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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-3N40-LCD 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%.

SKU 3G-OTH-179233

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-3N40-LCD 

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-3N40-LCD 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%.

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, 10K Ohm Type III Thermistor, Screw Terminals, RHP-E/N (MPN RHP-3N4A). Key specifications — Sensing Element Type: 10K Ohm Type III Thermistor; Temperature Accuracy: ±0.36°F @ 77°F; Output: 4 to 20 mA; Temperature Range: -4 °F to 140 °F.

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