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H2s Monitor

Fail

The top 5 brands take 96% of clicks, so H2s Monitor is a Fail.

Flapen Score
48
48 / 100
Ranks 4,568 of 9,536 Tools & Home Improvement niches · on the category median
Market size
$472K/yr88K searches / yr
90-day growth
-18.5%search demand this quarter
Competition
70%top-5 click share · 7 brands · 44 sellers

Flapen Score

H2s Monitor against its category

The dotted line is the Tools & Home Improvement average. Past it, H2s Monitor is stronger. Inside it, weaker.

48Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The H2s Monitor market on Amazon at a glance

Shoppers on Amazon United States searched for H2s Monitor 88K times last year and spent an estimated $472K. The top 5 brands take 96% of clicks. Flapen scores it 48 out of 100, a Fail.

01 · Demand

5.7% of searches ended in a purchase last week.

Shoppers searched for this 88K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. In the latest week, 5.7% of those searches ended in a purchase. Searches in the last 90 days moved -18.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $472K a year.

Searches, last 12 months
88K
Growth, 90 days vs prior 90
-18.5%
Conversion, latest week
5.7%
Market size, estimated
$472Ka year
Peak month
February1.3× the quietest month
Top search term
h2s monitor57K searches a year

02 · Price

A sale here is worth $94.82.

Listings sell for $94.82 on average, from $45.04 to $222.25. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 500 to 750 of them. At $94.82 that is $47K to $71K a year per listing.

Average price
$94.82inside the $15 to $100 sweet spot
Price range
$45.04–$222.25
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
10K–13K
Units per listing a year
500–750
Revenue per listing a year
$47K–$71K
Returns
1.7%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is ads.

100% of listings pay for placement with sponsored ads. 86% ship with Prime. On an average day, 16.7% of listings are out of stock. The average listing ranks #110 within Household Sensors & Alarms. It carries 228 reviews at 4.31 stars, so a new listing needs social proof before a better product.

Sponsored listings
100%
Prime listings
86%
Out of stock, average day
16.7%
Average rank
#110in Household Sensors & Alarms
Average rating
4.31 starsAmazon United States average 4.42 stars
Average reviews
228per listing
Listings tracked
14

04 · Newcomers

Amazon counts 0 of last year's 1 launches as successful.

1 products launched here in the last 12 months. Amazon counts 0 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 38 months on average, so the names here are settling in.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
38 months

Products

Top H2s Monitor products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 70% of clicks. Leaders hold, but buyers still shop past them.

$0$47K$94K$142K$189K1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 rising

Sellers

44

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

1%

  • BW Technologies58%
  • TOPTES15%
  • Sooguard8%
  • DANOPLUS7%
  • HAOKESITE7%
  • FORENSICS DETECTORS FD3%
  • Open — no brand owns it (1 brand, 1%)

Demand

H2s Monitor search demand

Weekly searches over the year, seasonality beneath. Pick a range.

4K3KSpike '25Holiday '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Search terms

Top H2s Monitor search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • h2s monitor57K/yr
  • h2s gas monitor11K/yr
  • h2s12K/yr
  • h2s monitor clip on8K/yr

Reviews and returns

What reviews say buyers love and hate about H2s Monitor

We read the reviews and the return reasons for every product selling here.

12%of positive reviews mention “Value For Money”
19%of negative reviews mention “Measurement/Reading Accuracy”
1.7%of orders come back
“faulty calibration”
A buyer, on “Measurement/Reading Accuracy”19% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

21 topics

NegativePositive

FAQ

Common H2s Monitor questions

Answered from the same tracked data.