Price: $69.99 - $62.99
(as of Oct 24, 2025 01:00:50 UTC – Details)
Product description
Combination Gas & Carbon Monoxide Detector 
PC Reflective Lens Design
Large LCD Digital Display
4-in-1 Sensor Detect: carbon monoxide gas, combustible gas, temperature and humidity
Plug and Play Design
Easy to install, save installation time.
Imported 4-in-1 Sensor
High reliability, high sensitivity, high accuracy
Technical Specifications
Model KH158 Power Supply AC110-220V CO Detection Range 0-2000ppm Combustible Gas Range 0-10%LEL Fahrenheit Range 1-176℉ Humidity Rang 0-99% Warm-up Time 60S Real-time Screen Display PPM, %LEL,°F and Humidity Installation Method Plug in Alarm 85DB PC Reflective Lens Design Simple, generous, high display clarity
Attention:
1.After the product is plugged in, wait for 180 seconds and it will automatically turn on the normal working state, wait for 30 minutes and the product will enter the stable working state.
2. The product has a self-test button, after receiving the product, you can first plug in the self-test of the product status, that is, press the self-test button after the product alarm sounded, while the product on the green, red and yellow indicators will light up at the same time, check the alarm sound and the three colors of the indicator are normal. After the alarm stops, the product will automatically return to its normal working state, i.e. only the green indicator light is on.
3. Horizontal coverage radius: usually 5-10 meters (to the center of the alarm, open and unobstructed area). If there are walls, partitions and other obstructions in the space, the coverage area will be divided, need to be installed in each separate space.
Vertical coverage height: can only cover the same floor, can not effectively monitor across floors (such as the first floor alarm can not cover the second floor), different floors need to be installed separately.
Comparison of Combined Gas and Carbon Monoxide Detectors
4-in-1 Sensor
0-1000PPM, 0-10%LEL, 0-99RH%, 1-176°F
4-in-1 Sensor
0-1000PPM, 0-10%LEL, 0-99RH%, 1-176°F
AC-Plug-in Design
Easy to install, save installation time.
PC Reflective Lens Design
Clearer font, simple and generous appearance.
Burst Flash Design
Makes you more aware of the environment situation
9V Battery Backup Function
Automatically start when power outage occurs, won’t suffer from power outage.
【4-in-1 Upgraded Gas & Carbon Monoxide Detector】Designed with a large digital display, it detects and displays temperature, humidity,natural gas and carbon monoxide levels in real time for your peace of mind
【4-in-1 Upgraded Sensor】Highly Reliable, Sensitive and Accurate Sensor
【Combiantion Gas & Carbon Monoxide Detector】When the dangerous gas reaches the default value, the device will immediately display the dangerous gas concentration and 85dB alarm.
【4-in-1 Real-time Display】Carbon monoxide level(PPM), combustible gas level(%LEL), temperature(°F) and humidity(RH%)
【Applications】4-in-1 gas & carbon monoxide detector is suitable for home, kitchen, apartment and etc.
Combustible gases include natural gas, propane, methane, butane, LNG, LPG, etc.
Tips: open the package, the product is directly plugged into the power supply, count down 60 seconds, and then display a green light, indicating normal operation.
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