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Dwyer RHP-2N4B Indoor Wall-Mount Transmitter - Indoor Wall-Mount Transmitters
DwyerIndoor Wall-Mount Transmitters

Dwyer RHP-2N4B Indoor Wall-Mount Transmitter

The Dwyer RHP-2N4B is an indoor wall-mount transmitter that measures humidity and temperature, with a 4 to 20 mA output. It features a 10K Ohm Type II Thermistor sensing element, a temperature range of -4 °F to 140…

SKU 3G-OTH-179235

Also listed as: RHP2N4B · RHP 2N4B

Brand
Dwyer
Item
RHP-2N4B Indoor Wall-Mount Transmitter
Part Number
RHP-2N4B
Category
Indoor Wall-Mount Transmitters
Available to Order
Also known as:RHP-2N4BDwyer
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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-2N4B
Type
Screw Terminals, RHP-E/N
Output
4 to 20 mA
Temperature Range
-4 °F to 140 °F
Type II Thermistor
10K Ohm
Sensing Element Type
10K Ohm Type II 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-2N4B is an indoor wall-mount transmitter that measures humidity and temperature, with a 4 to 20 mA output. It features a 10K Ohm Type II 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-2N4B humidity/temperature sensor used for?

The Dwyer RHP-2N4B is an indoor wall-mount transmitter that measures both humidity and temperature. It is commonly used in HVAC, building automation, and environmental monitoring applications to provide a 4 to 20 mA output signal for control systems.

What are the specifications of the Dwyer RHP-2N4B?

The Dwyer RHP-2N4B features a 10K Ohm Type II Thermistor sensing element, a temperature range of -4 °F to 140 °F, and a temperature accuracy of ±0.36°F @ 77°F. It has a 4 to 20 mA output and screw terminals for wiring.

Where to buy the Dwyer RHP-2N4B worldwide?

You can source the Dwyer RHP-2N4B through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the sensor reaches your facility reliably.

How to install the Dwyer RHP-2N4B humidity/temperature sensor?

Mount the Dwyer RHP-2N4B on an indoor wall at a representative location, away from direct heat or drafts. Connect the 4 to 20 mA output and 10K Ohm Type II Thermistor to your control system using the screw terminals. Follow Dwyer's manual for wiring details.

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
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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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Indoor wall-mount transmitter with 4 to 20 mA output and 10K Ohm Type II Thermistor sensing element. Temperature range -4 °F to 140 °F with accuracy ±0.36°F @ 77°F. Screw terminals for wiring. Suitable for HVAC, clean rooms, and environmental monitoring
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Indoor wall-mount transmitter for relative humidity up to 100% and temperature measurement. Outputs a 4 to 20 mA signal via screw terminals. Temperature accuracy is ±0.9°F at 77°F. Suitable for HVAC, building automation, and environmental monitoring applications

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