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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-3E4A is an indoor wall-mount transmitter that measures humidity and temperature, providing a 4 to 20 mA output. It features a 10K Ohm Type III Thermistor sensing element with a temperature accuracy of…

SKU 3G-OTH-179257

Also listed as: RHP3E4A · RHP 3E4A

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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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Dwyer
Manufacturer Part Number
RHP-3E4A
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-3E4A is an indoor wall-mount transmitter that measures humidity and temperature, providing a 4 to 20 mA output. It features a 10K Ohm Type III Thermistor sensing element with a temperature accuracy of ±0.36°F @ 77°F and operates over a temperature range of -4 °F to 140 °F.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Dwyer RHP-3E4A humidity/temperature sensor used for?

The Dwyer RHP-3E4A 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-3E4A?

The Dwyer RHP-3E4A features a 10K Ohm Type III Thermistor sensing element with temperature accuracy of ±0.36°F @ 77°F. It operates over a temperature range of -4 °F to 140 °F and provides a 4 to 20 mA output. Connections are via screw terminals.

Where to buy the Dwyer RHP-3E4A worldwide?

3G Electric supplies the Dwyer RHP-3E4A worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the Dwyer RHP-3E4A wall-mount transmitter?

Mount the Dwyer RHP-3E4A on a flat indoor wall at a representative height, away from direct heat or drafts. Connect the 4 to 20 mA loop to screw terminals per the wiring diagram. Ensure the sensor is not obstructed for accurate humidity and temperature 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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Compatible alternatives & equivalents

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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)
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DWYER Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F, 0%to 100% Relative Humidity Range (MPN RHP-3E40)
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