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Description
SMART SENSOR ST8900 4 in 1 Toxic Gas CO Carbon Monoxide Detector Hydrogen Sulfide H2S Oxygen Combustible Gas Test LCD Display Monitor, Sound Light Vibration AlarmDIY Supplies: Paint & Decorating Model Number: SMART SENSOR 4 in 1 Gas Detector This professional 4 in 1 gas detector is designed for detecting CO, H2S, O2 and LEL gas. It can continuously monitor the CO, H2S, O2 and LEL gas concentration in the surrounding environment, once the gas concentration reaches the level of the alarm, the alarm will sound, light and vibrate. High precision portable CO, H2S, O2 and LEL gas tester with compact size and light
- DIY Supplies:Paint & Decorating
- Model Number:SMART SENSOR 4 in 1 Gas Detector
This professional 4 in 1 gas detector is designed for detecting CO, H2S, O2 and LEL gas. It can continuously monitor the CO, H2S, O2 and LEL gas concentration in the surrounding environment, once the gas concentration reaches the level of the alarm, the alarm will sound, light and vibrate. High precision portable CO, H2S, O2 and LEL gas tester with compact size and light weight, very easy to carry and operate.
Features:
1. Detect 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H2S), oxygen(O2) and combustible gas(LEL).
2. Continuously monitor the CO, H2S, O2 and LEL gas concentration in the surrounding environment with professional and accurate measurement.
3. Sound & light vibration alarm works when one of the CO, H2S, O2 & LEL gas concentration reaches the level of the alarm.
4. Can set automatic shutdown time and concentration of alarm value.
5. Large color LCD display with back-light for easy reading.
6. Can connect to a sampling pump to operate in closed place.
7. Can be widely used in shipping, mining, oil exploitation, chemical, gas pipeline, tunnel construction, coal, metallurgy, paper, fire, municipal, textile and other industries.
8. Size: 138*70*43mm, weight: 360g
Features:
1. Detect 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H2S), oxygen(O2) and combustible gas(LEL).
2. Continuously monitor the CO, H2S, O2 and LEL gas concentration in the surrounding environment with professional and accurate measurement.
3. Sound & light vibration alarm works when one of the CO, H2S, O2 & LEL gas concentration reaches the level of the alarm.
4. Can set automatic shutdown time and concentration of alarm value.
5. Large color LCD display with back-light for easy reading.
6. Can connect to a sampling pump to operate in closed place.
7. Can be widely used in shipping, mining, oil exploitation, chemical, gas pipeline, tunnel construction, coal, metallurgy, paper, fire, municipal, textile and other industries.
8. Size: 138*70*43mm, weight: 360g
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Great price without skipping on quality.
Size: 12, Color: Light Green, Size: 12, Color: Light Green
Perfect for 8th grade dance. This 3 piece suit fit perfectly. It look so sharp for his dance. This would also be nice for a wedding. I plan on getting a few different colors the price makes it affordable but doesn't skip on quality.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Buena calidad
Size: 12, Color: Beige
Excelente calidad precio valor buen acabado
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Boys suit
Size: 10, Color: Lilac
Great boys suit! Soft, made with very good material! Color is exactly what you paid for! The stitching is amazing and good quality.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Dapper kids suit
Size: 14, Color: Beige, Size: 14, Color: Beige
It checks all the boxes!
This is on my 11 yr old son. Its a little big on him but I ordered a 14Y so that's expected.
My son is ~58in & 100lbs
Sizing is accurate with the chart.
The pants have pockets and also elastic with buttons on the inside so you can adjust the waist.
The vest also has 2 pockets. They are sewn shut so you will need to cut them open. The back has adjustable straps to make it tighter.
The jacket has a total of 4 pockets, 3 outside and 1 inside. (The inside one is sewn shut). There are small shoulder pads on the jacket, nothing crazy.
Overall this a high quality Boys suit and I'd recommend it.
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Reviewed in the United States on October 24, 2025
★★★★★ 5
Nice kids suit
Size: 5, Color: Light Blue
This is a nice way to play up your son's sophistication. It is a linen suit, but isn't a true linen. It is a blend of linen, polyester and spandex, which isn't a bad thing for kids since it has a softer feel. Sizing was accurate. I'm looking forward to when he can wear this to a formal occasion.
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Reviewed in the United States on October 24, 2025