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Dwyer Temperature/Humidity Switch: 0%to 100% Relative Humidity Range - Digital Temperature & Humidity Switches
DwyerDigital Temperature & Humidity Switches

Dwyer Temperature/Humidity Switch: 0%to 100% Relative Humidity Range

The DWYER THC-31 is a digital temperature and humidity switch with a 0% to 100% relative humidity range and -50°C to 150°C temperature range. It features an accuracy of ±3% @ 20 to 90% RH, operates on a supply…

SKU 3G-OTH-179760

Brand
Dwyer
Item
Temperature/Humidity Switch: 0%to 100% Relative Humidity Range
Category
Digital Temperature & Humidity Switches
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Technical Specifications

Dwyer
Manufacturer Part Number
THC-31
Type
-50°C to 150°C
Accuracy
±3% @ 20 to 90% RH
Mounting Style
Panel Mount
Supply Voltage
20 to 250V AC/24V DC
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DWYER THC-31 is a digital temperature and humidity switch with a 0% to 100% relative humidity range and -50°C to 150°C temperature range. It features an accuracy of ±3% @ 20 to 90% RH, operates on a supply voltage of 20 to 250V AC/24V DC, and is designed for panel mounting.

Frequently Asked Questions

What is the Dwyer THC-31 temperature/humidity switch used for?

The Dwyer THC-31 is a digital switch used to monitor and control temperature and humidity in HVAC, clean rooms, and industrial process environments. It provides reliable switching based on setpoints across a -50°C to 150°C temperature range and 0% to 100% relative humidity range.

What are the specifications of the Dwyer THC-31?

The Dwyer THC-31 has a temperature range of -50°C to 150°C and a humidity range of 0% to 100% RH. Accuracy is ±3% @ 20 to 90% RH. Supply voltage is 20 to 250V AC/24V DC. It features panel mount style and is manufactured by Dwyer.

Where to buy the Dwyer THC-31 worldwide?

3G Electric supplies the Dwyer THC-31 temperature/humidity switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this panel-mount digital switch.

How to install the Dwyer THC-31 temperature/humidity switch?

Mount the Dwyer THC-31 in a panel cutout per the manufacturer's template. Connect supply voltage (20 to 250V AC/24V DC) following local electrical codes. Ensure the sensor is exposed to the measured air stream and avoid condensation on the humidity element 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 digital temperature & humidity switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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