Evalm

Rechargeable SMART SENSOR ST8990 4-in-1 Gas Detector: O₂, LEL, CO, H₂S with LCD Backlight Alarm

$85.99 USD

~~$0.00 USD~~ $85.99 USD

Sale Sold out

Shipping calculated at checkout.

Size Default Title

Estimated Delivery: -

Multi-Gas Meter - Product Description

Introduction

The Multi-Gas Meter is a portable, handheld device designed for continuous monitoring of four gases: Oxygen (O₂), Combustible Gas (LEL), Carbon Monoxide (CO), and Hydrogen Sulfide (H₂S). It displays all gas concentrations on an LCD screen and allows users to configure high/low alarms, including STEL/TWA alarm functions. The device features both audio and visual alerts when gas levels exceed set limits.

Features

Detects four gases: Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), Oxygen (O₂), and Combustible Gas (LEL).
Constructed with premium materials and selected quality electronic components for superior sensitivity and accurate measurement.
Pocket-sized, lightweight, and ergonomically designed, making it easy to carry and use.
Equipped with a 2500mAh lithium-ion battery that supports 8-hour operation and approximately 6 hours with an external gas sampling pump.
Features a backlight for easy reading in dark environments.
Two alarm methods: audio alarm and icon display.
Offers various functions: gas monitoring, peak value display, low/high alarm settings, TWA settings, etc.
Ideal for use in industries such as petroleum, chemical, metallurgy, and refining.

Specifications

Brand	SMART SENSOR
Model	ST8990
Color	Yellow
Material	ABS
Carbon Monoxide Range	0～999 ppm
Hydrogen Sulfide Range	0～500 ppm
Oxygen Range	0～30% VOL
Combustible Gas Range	0～100% LEL
Operation Current	220 mA
Short Circuit Current	≤3 A
Operation Voltage	3.7 V
Maximum Open Circuit Voltage	≤4.2 A
Battery	Lithium battery
Battery Capacity	2500 mAh
Display Type	Segment type LCD
Operation Humidity	15%~95% RH
Operation Temperature	10℃～50℃
Storage Temperature	0～40℃
Item Size	11.45 * 6.44 * 4.45 cm / 4.50 * 2.53 * 1.75 in
Item Weight	200 g / 7 oz
Package Size	20 * 11 * 7 cm / 7.87 * 4.33 * 2.75 in
Package Weight	475 g / 16.8 oz

Notes

This listing is for the gas monitor only; other accessories are not included.
Measurements may vary slightly due to manual measurement.
Items may appear slightly different in photos due to lighting or other factors; please refer to the actual product.
Please read the manual carefully before use.