We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
DWYER Carbon Dioxide/Temperature Transmitter: Building Management Controllers, Carbon Dioxide - Fixed Gas Detectors with Transmitters
DWYERFixed Gas Detectors with Transmitters

DWYER Carbon Dioxide/Temperature Transmitter: Building Management Controllers, Carbon Dioxide

The DWYER CDT-2D40 is a duct-mounted carbon dioxide and temperature detector transmitter for building management controllers. It measures CO₂ from 0 to 2000 ppm and operates on 16 to 35V DC or 19 to 28V AC.

SKU 3G-OTH-554844

Brand
DWYER
Item
Carbon Dioxide/Temperature Transmitter: Building Management Controllers, Carbon Dioxide
Category
Fixed Gas Detectors with Transmitters
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

DWYER
Manufacturer Part Number
CDT-2D40
Series
CDT
Type
Carbon Dioxide, CO2
For Use With
Building Management Controllers
Gas Detected
Carbon Dioxide
Product Type
Detector Transmitter
Measurement Range
Carbon Dioxide (0 to 2000 ppm)
Mounting Location
Duct
Operating Voltage
16 to 35V DC/19 to 28V AC
Includes Calibration Certificate
No
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The DWYER CDT-2D40 is a duct-mounted carbon dioxide and temperature detector transmitter for building management controllers. It measures CO₂ from 0 to 2000 ppm and operates on 16 to 35V DC or 19 to 28V AC.

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 CDT-2D40 used for?

The DWYER CDT-2D40 is a duct-mounted carbon dioxide and temperature detector transmitter used with building management controllers to monitor indoor air quality. It measures CO₂ from 0 to 2000 ppm and helps optimize HVAC ventilation in commercial facilities.

What are the specifications of the DWYER CDT-2D40?

The DWYER CDT-2D40 operates on 16 to 35V DC or 19 to 28V AC, detects carbon dioxide from 0 to 2000 ppm, and mounts in a duct. It is designed for use with building management controllers and is part of the DWYER CDT series.

Where to buy the DWYER CDT-2D40 worldwide?

3G Electric supplies the DWYER CDT-2D40 worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver this CO₂/temperature transmitter to building management projects across all regions.

How to install the DWYER CDT-2D40?

Install the DWYER CDT-2D40 in a duct location with proper airflow, following the manufacturer's wiring diagram for 16 to 35V DC or 19 to 28V AC power. Ensure the sensor is accessible for periodic calibration and verify output signals to the building management controller.

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 fixed gas detectors with transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from DWYER

View all DWYER parts →
DWYER Carbon Monoxide Transmitter/Switch: Carbon Monoxide, CE Compliant/RoHS Compliant, Gas Detector (MPN CMS300-FC). Key specifications — Brand: DWYER; Operating Voltage: 15 to 32V AC; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 300 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Includes Calibration Certificate: Yes; Voltage: Low Voltage (12 to 24V AC, 12 to 32V DC).
DWYER
DWYER Carbon Monoxide Transmitter/Switch: Carbon Monoxide, CE Compliant/RoHS Compliant, Gas Detector (MPN CMS300-FC). Key specifications — Brand: DWYER; Operating Voltage: 15 to 32V AC; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 300 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Includes Calibration Certificate: Yes; Voltage: Low Voltage (12 to 24V AC, 12 to 32V DC).
DWYER Carbon Dioxide/Temperature Transmitter: Building Management Controllers, Carbon Dioxide, CO2 (MPN CDT-2D44). Key specifications — Brand: DWYER; Operating Voltage: 16 to 35V DC/19 to 28V AC; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 2000 ppm); Product Type: Detector Transmitter; Mounting Location: Duct; For Use With: Building Management Controllers; Series: CDT.
DWYER
DWYER Carbon Dioxide/Temperature Transmitter: Building Management Controllers, Carbon Dioxide, CO2 (MPN CDT-2D44). Key specifications — Brand: DWYER; Operating Voltage: 16 to 35V DC/19 to 28V AC; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 2000 ppm); Product Type: Detector Transmitter; Mounting Location: Duct; For Use With: Building Management Controllers; Series: CDT.
DWYER Gas Transmitter: Carbon Monoxide, CE Compliant/RoHS Compliant, Gas Detector, CO, Wall, 2 yr (MPN GSTA-C-FC). Key specifications — Brand: DWYER; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 200 or 0 to 500 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Series: GSTA; Includes Calibration Certificate: Yes.
DWYER
DWYER Gas Transmitter: Carbon Monoxide, CE Compliant/RoHS Compliant, Gas Detector, CO, Wall, 2 yr (MPN GSTA-C-FC). Key specifications — Brand: DWYER; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 200 or 0 to 500 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Series: GSTA; Includes Calibration Certificate: Yes.
DWYER Carbon Dioxide Detector: Carbon Dioxide, BTL Listed/CE Compliant/RoHS Compliant, Gas Detector (MPN CDTA-5N000). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 5000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTA; Includes Calibration Certificate: No.
DWYER
DWYER Carbon Dioxide Detector: Carbon Dioxide, BTL Listed/CE Compliant/RoHS Compliant, Gas Detector (MPN CDTA-5N000). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 5000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTA; Includes Calibration Certificate: No.
DWYER Gas Transmitter: Nitrogen Dioxide, CE Compliant/RoHS Compliant, Gas Detector, NO2, Wall, 2 yr (MPN GSTA-N). Key specifications — Brand: DWYER; Gas Detected: Nitrogen Dioxide; Measurement Range: Nitrogen Dioxide (0 to 10 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Series: GSTA; Includes Calibration Certificate: No.
DWYER
DWYER Gas Transmitter: Nitrogen Dioxide, CE Compliant/RoHS Compliant, Gas Detector, NO2, Wall, 2 yr (MPN GSTA-N). Key specifications — Brand: DWYER; Gas Detected: Nitrogen Dioxide; Measurement Range: Nitrogen Dioxide (0 to 10 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; Series: GSTA; Includes Calibration Certificate: No.
DWYER Carbon Dioxide Sensor: Carbon Dioxide, BTL Listed/CE Compliant, Gas Detector, CO2, Wall, 15 yr (MPN CDTC-2N000-LCD). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Display Type: Digital; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 2000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTC.
DWYER
DWYER Carbon Dioxide Sensor: Carbon Dioxide, BTL Listed/CE Compliant, Gas Detector, CO2, Wall, 15 yr (MPN CDTC-2N000-LCD). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Display Type: Digital; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 2000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTC.
DWYER Gas Transmitter: Building Management Controllers, Carbon Monoxide, CE Compliant/RoHS Compliant (MPN GSTC-C-FC). Key specifications — Brand: DWYER; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 500 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; For Use With: Building Management Controllers; Series: GSTC; Includes Calibration Certificate: Yes.
DWYER
DWYER Gas Transmitter: Building Management Controllers, Carbon Monoxide, CE Compliant/RoHS Compliant (MPN GSTC-C-FC). Key specifications — Brand: DWYER; Gas Detected: Carbon Monoxide; Measurement Range: Carbon Monoxide (0 to 500 ppm); Product Type: Detector Transmitter; Mounting Location: Wall; For Use With: Building Management Controllers; Series: GSTC; Includes Calibration Certificate: Yes.
DWYER Carbon Dioxide Detector: Carbon Dioxide, BTL Listed/CE Compliant/RoHS Compliant, Gas Detector (MPN CDTA-5N000-LCD). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Display Type: Digital; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 5000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTA.
DWYER
DWYER Carbon Dioxide Detector: Carbon Dioxide, BTL Listed/CE Compliant/RoHS Compliant, Gas Detector (MPN CDTA-5N000-LCD). Key specifications — Brand: DWYER; Operating Voltage: 10 to 42V DC/10 to 30V AC; Display Type: Digital; Gas Detected: Carbon Dioxide; Measurement Range: Carbon Dioxide (0 to 5000 ppm); Product Type: Fixed Gas Detector; Mounting Location: Wall; Series: CDTA.