DAHUA HY-GC20B Standalone Carbon Monoxide Alarm
SKU: 26359845800

DAHUA HY-GC20B Standalone Carbon Monoxide Alarm

Sale price$30.60 Regular price$34.00
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

DAHUA HY-GC20B Standalone Carbon Monoxide AlarmHY GC20B Standalone Carbon Monoxide Alarm > High performance Figaro electrochemical CO sensor to deliver accurate detection of carbon monoxide leakage and respond quickly > Long standby time, low power consumption, 10 year battery life > Support low battery warning, one click silence, and self test > Informative and easy to read CO concentration display in screen > Three indicator lights for displaying device status clearly > Excellent production,

HY-GC20B

Standalone Carbon Monoxide Alarm

> High-performance Figaro electrochemical CO sensor to deliver accurate detection of carbon monoxide leakage and respond quickly
> Long standby time, low power consumption, 10-year battery life
> Support low battery warning, one-click silence, and self-test
> Informative and easy-to-read CO concentration display in screen
> Three indicator lights for displaying device status clearly
> Excellent production, novel appearance, delicate and compact, simple and convenient installation



Product Data

Working Principle

Collection Type

Carbon Monoxide (CO)

Sensor Type

Electrochemical

Alarm

Alarm Type

CO alarm, fault alarm, low battery warning

Alarm Volume

Over 85dB (A) at 3 m (9.84 ft)

Alarm Mode

Visual and audible alarm

Silence Function

Support

Silence Duration

About 45 seconds

Alarm Response Threshold

50 ppm: 60 min–90 min

100 ppm: 10 min–40 min

300 ppm: < 3 min

Basic Parameters

Display

LCD

Indicator Light

LED (red/yellow/green)

LED Instruction

Alarm: Red indicator
Fault: Yellow indicator
Power: Green indicator

Power Supply

Battery Life

10 years

Power Source

3V CR123A lithium battery (replaceable)

Operating Current

Monitoring Current: ≤20uA
Alarm Current: ≤10mA

Operating Ambient

Operating Environment

Indoor use only

Operating Temperature

–10°C to +40°C (+14°F to +104°F)

Operating Humidity

≤95% RH (non condensing)

Appearance

Color

White

Material

PC + ABS

Dimensions

116.4 mm × 71.7 mm × 28.3 mm (4.58" × 2.82" × 1.11")

Weight

125 g

Installation

Wall Mount

Certification

Certifications

TÜV and CE listed

Compliance Standard

EN 50291-1:2018

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 26359845800

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4.8 ★★★★★
Based on 2226 reviews
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Product Reviews
H
Verified Purchase
Haley D
Grantham, US
★★★★★ 5
good stretch
Size: 10 Long, Color: Dark Wash
Honestly, these are one of those surprisingly good basics—especially for the price. The biggest standout is the stretch. They’re really comfortable and move with you, so they don’t have that stiff “jeans” feeling. They hug your body in a flattering way without feeling too tight or restrictive, which makes them easy to wear all day. The mid-rise fit is also a sweet spot—not too low, not too high—so they’re super versatile with different tops. What I liked: Very stretchy and comfortable (almost feels like jeggings, but still looks like denim) Flattering skinny fit through the legs Easy everyday jeans—work, errands, going out Great value for the price What to know: Material is on the thinner side (more comfort than “structured denim”) They can lose shape slightly after a full day of wear Not the most durable long-term compared to higher-end denim Final thoughts: These are perfect if you want cute, comfortable, affordable jeans you can throw on with anything. Not premium denim, but for everyday wear—they definitely get the job done and are worth having in your rotation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
R
Verified Purchase
Rachael W.
Charlottesville, US
★★★★★ 5
Great
Size: 6, Color: Black
These were great, daughter wore them for her band concert. They fit nice, were soft, good quality and very black.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
I
Verified Purchase
Isabel
Cuba, US
★★★★★ 4
Size down.
Size: 8 Long, Color: Iced Blue Light Wash
They are high stretch so I would size down from your usual size. I have bought size 10 in their brand and noticed the two previous I've purchased before this one were loose. So when I purchased this one I sized down and they fit good to me. I got long so they are LONG. And the regular would probably fit at your ankle or above. The only reason why I didn’t give it 5 stars was bc I don’t feel it mid rise to me it feels like high rise but I don’t feel them uncomfortable and also THEY ARE NOT SKINNY JEANS. They are straight leg and a tad bit loose so if you want stretch and skinny jeans these are not the ones for you. I only bought them thinking they were like the picture but it’s false advertisement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
D
Verified Purchase
Debra R Singleton
Whiting, US
★★★★★ 5
Amazon Essentials Women's High Stretch Jeans
Size: 14, Color: Iced Blue Light Wash
Amazon Essentials Women's High Stretch Jeans receives positive reviews from me for their significant stretch, comfort, and flattering fit. The jeans are great for everyday wear, they feel soft and thick yet move well. Although some folks find sizing inconsistent, occasionally needing to size up or experiencing a slightly odd fit in certain areas. They're praised for looking good, offering good value, and being versatile enough for various occasions. Sizing can be hit-or-miss for some, but not for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2025
M
Verified Purchase
Maegen Jackson
Lake Worth, US
★★★★★ 3
These Are NOT Skinny Jeans.
Size: 18, Color: Medium Blue
Unfortunately, I'm having to return mine. I purchased these expecting to receive skinny jeans and these are not skinny jeans. These are a relaxed fit, straight leg jean. I'm not too sure about the stretch because they were so big in the leg, I couldn't really tell how well they do stretch. They feel like a nice quality jean other than the fit and they're comfortable around the waist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025

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