GASDOC DS-399 Description
GASDOC DS-399 The GasDoc DS-399 is a portable carbon monoxide detector that can detect carbon monoxide concentrations from 0 to 1000PPM, while also monitoring the temperature and humidity of the environment.This carbon monoxide detector features convenient Type-C charging, eliminating the need for batteries. A single charge powers it for up to 7 days of continuous use, making it perfect for everyday monitoring and on-the-go reliability.
How to Test if the Carbon Monoxide Detector is Working: Carbon monoxide is typically produced during incomplete combustion and in smoky environments. Here are two simple testing methods:
Using a Lit Cigarette: Light a cigarette and hold the DS-399 detector's sensor near the smoke. When the device displays a reading or triggers an audible and visual alarm, it indicates that the carbon monoxide detector is functioning.
Controlled Smoke Environment: Light a small stick or piece of paper, and use a transparent cover to enclose both the burning item and the detector in a sealed space. When the device shows a reading or triggers an audible and visual alarm, it confirms that the detector is working.

Long Battery Life: The DS-399 carbon monoxide detector is equipped with a powerful 1000mAh lithium battery, offering up to 168 hours of continuous use on a full charge. It also features Type-C charging for minimal downtime.
Dual Alert System: With both visual and audible alarms, the DS-399 ensures quick response and timely alerts to protect your safety.
Green: 0–50 ppm (Low concentration)
Yellow: 51–150 ppm (Dangerous concentration)
Red: Above 150 ppm (Alert concentration)

Customizable Alarm Threshold: The alarm threshold can be adjusted between 25–125 ppm, with the default set at 50 ppm. Double-click the function button to customize the CO concentration alarm level.
Portable and Easy to Use: The DS-399 carbon monoxide detector features a compact design of 4.13" × 2" × 0.83" (105×51×21mm), about the size of a palm. Its small size makes it easy to carry, whether in your pocket or hanging from your luggage with the included lanyard. With a user-friendly interface and simple controls, it ensures safety is always within reach and easy to monitor, even while traveling.
What You Get:Your purchase includes:
1x DS-399 Carbon Monoxide Detector
1x User Manual
1x Type-C Cable
1x Lanyard
GasDoc is committed to providing quality products and services, providing you with reliable gas monitoring detectors to protect your safety. If you have any questions or need additional help, please don't hesitate to reach out to us.