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Dwyer Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals - Indoor Wall-Mount Transmitters
DwyerIndoor Wall-Mount Transmitters

Dwyer Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals

The Dwyer RHP-2N4A is an indoor wall-mount transmitter that measures humidity and temperature, with a 4 to 20 mA output. It features a 10K Ohm Type III Thermistor sensing element, a temperature range of -4 °F to 140…

SKU 3G-OTH-179237

Also listed as: RHP2N4A · RHP 2N4A

Brand
Dwyer
Item
Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals
Category
Indoor Wall-Mount Transmitters
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dwyer
Manufacturer Part Number
RHP-2N4A
Type
Screw Terminals, RHP-E/N
Output
4 to 20 mA
Temperature Range
-4 °F to 140 °F
Type III Thermistor
10K Ohm
Sensing Element Type
10K Ohm Type III Thermistor
Temperature Accuracy
±0.36°F @ 77°F

Technical Documents

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer RHP-2N4A is an indoor wall-mount transmitter that measures humidity and temperature, with a 4 to 20 mA output. It features a 10K Ohm Type III Thermistor sensing element, a temperature range of -4 °F to 140 °F, and a temperature accuracy of ±0.36°F @ 77°F.

Frequently Asked Questions

What is the Dwyer RHP-2N4A humidity/temperature sensor used for?

The Dwyer RHP-2N4A is an indoor wall-mount transmitter used for monitoring and controlling humidity and temperature in HVAC, cleanroom, and building automation systems. It provides a 4 to 20 mA output signal for integration with controllers and PLCs.

What are the specifications of the Dwyer RHP-2N4A?

The Dwyer RHP-2N4A features a 10K Ohm Type III Thermistor sensing element, 4 to 20 mA output, temperature range of -4 °F to 140 °F, and temperature accuracy of ±0.36°F @ 77°F. It uses screw terminals for wiring and is designed for indoor wall-mount installation.

Where to buy the Dwyer RHP-2N4A worldwide?

3G Electric supplies the Dwyer RHP-2N4A worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this Dwyer transmitter.

How to install the Dwyer RHP-2N4A humidity/temperature sensor?

Mount the Dwyer RHP-2N4A on an indoor wall at a representative height, away from direct heat or drafts. Connect the 4 to 20 mA output and 10K Ohm Type III thermistor to screw terminals per the wiring diagram. Ensure the sensor is not obstructed for accurate readings.

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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