GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector – Tolhom

3-Years Warranty

Enjoy Free Shipping on Orders $60+

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC

DS-399PRO 4-in-1 CO & CO2 Detector

4-in-1 Air Quality Defense:

Simultaneously tracks Carbon Monoxide ( $0\text{--}1000\text{ PPM}$ ), Carbon Dioxide ( $400\text{--}5000\text{ PPM}$ ), real-time temperature, and humidity. An all-in-one safety shield engineered for homes, RVs, camping, and offices.

Custom Audio-Visual Alarms:

Features personalized alarm threshold settings for both CO and $\text{CO}_2$ . Loud audible beeps combine with a color-changing LED ring below the screen to give immediate, high-impact alerts for gas spikes.

72H Rechargeable Battery:

Packed with a $1000\text{mAh}$ rechargeable lithium battery with fast Type-C charging. Delivers up to 72 hours of uninterrupted continuous monitoring on a single charge—ideal for road trips and outdoor adventures.

Palm-Sized & Ultra-Portable:

Easily fits in your pocket or clips to backpacks and gear with the included lanyard, making air safety effortless on the go.

What You Get:

1× DS-399PRO CO & $\text{CO}_2$ Detector, 1× Lanyard, 1× Type-C Charging Cable, and 1× User Manual.

paypal

visa

master

american express

discover

apple pay

google pay

100% Secure Checkout

Secure Payment Gateways Only

Warranty

3-Year warranty policy

Fast Delivery

Tracked Shipping

After-Sale Service

24/7 support

A CLOSER LOOK

DS-399PRO 4-in-1 CO & CO2 Detector

Technical Specifications

Sensor Type

Carbon Monoxide and Carbon Dioxide Sensor

Alarm

Audible, Visual

Power source

Battery Powered

Display

Temperature and Humidity

Product dimensions

105D x 21W x 51H millimeters

Item weight

76.8 Grams

Unit count

1.0 count

Certification

CE, UKCA, RoHS, FC

User Manual

GASDOC DS-399PRO 4-in-1 portable CO and CO2 detector

GASDOC DS-399PRO carbon monoxide and carbon dioxide detector with digital display

AS SEEN ON

The Effects of Carbon Monoxide on the Human Body

Alt image

Comparison of the GASDOC CO Series

DS-399PRO

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-399PRO 4-in-1 Portable CO & CO2 Detector

Best For: RV & Outdoor Trips

Battery Runtime: Up to 72 Hours

Temperature & Humidity: ✓

CO2 Detection: ✓

$49.99

DS-399

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

GASDOC DS-399 Carbon Monoxide Detector

Best For: RV & Outdoor Trips

Battery Runtime: Up to 168 Hours

Temperature & Humidity: ✓

CO2 Detection: ×

$36.99

DS-100

GASDOC DS-100 Carbon Monoxide Detector

GASDOC DS-100 Carbon Monoxide Detector

GASDOC DS-100 Carbon Monoxide Detector

GASDOC DS-100 Carbon Monoxide Detector

GASDOC DS-100 Carbon Monoxide Detector

GASDOC DS-100 Carbon Monoxide Detector

Best For: Backpacking & Hiking

Battery Runtime: Up to 140 Hours

Temperature & Humidity: ✓

CO2 Detection: ×

$39.99

DS-100PRO

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

GASDOC DS-100PRO 4-in-1 Portable CO & CO2 Detector

Best For: Backpacking & Hiking

Battery Runtime: Up to 72 Hours

Temperature & Humidity: ✓

CO2 Detection: ✓

Built-in Magnet

$49.99

DS-X1

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

GASDOC DS-X1 Carbon Monoxide Detector

Best For: Camping & Tent Lighting

Battery Runtime: Up to 48 Hours

Magnetic Back

6 Lighting Modes

$39.99

Note: Dual-sensor models (CO + CO2) consume more power due to the CO2 sensor, leading to a shorter runtime.

Palm-sized 4-in-1 CO CO2 detector for travel camping and home use

Portable 4-in-1 gas detector with 72-hour rechargeable battery life

CO and CO2 monitor with green yellow and red safety indicator lights

GASDOC DS-399PRO detector with audible alarm and color visual alert light

GASDOC DS-399PRO CO and CO2 detector for home air quality monitoring

Compact GASDOC DS-399PRO detector with lanyard for easy carrying

GASDOC DS-399PRO detector kit with Type-C cable lanyard and user manual

DS-399PRO 4-in-1 Detector Manual

Subscribe Today

Sign up for exclusive content, special prizes, and latest update

Products

Gas Leak Detector

Electrical Testing Tools

Laser Level

Distance Measurement

Carbon Monoxide Detector

Company

About Us

Terms of Service

intellectual property rights

blog

Support

Track Your Order

Shipping Policy

Return Policy

User Manuals

Contact Us

Email

Wholesale

Affiliate Program

Products

Gas Leak Detector

Electrical Testing Tools

Laser Level

Distance Measurement

Carbon Monoxide Detector

Company

About Us

Terms of Service

intellectual property rights

Blog

Support

Track Your Order

Shipping Policy

Return Policy

User Manuals

Contact Us

Email

Wholesale

Affiliate Program