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45

ds18b20

Skip it

A small market ($53K/yr) — this niche doesn't clear our bar today.

Market size 13Growth 22Conversion 82Competition 40Returns 95Price range 49Avg price 38Brand share 30Review moat 72Quality gap 48

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Conversion

Great8.8%

search→purchase rate — share of searches ending in a sale

Review moat

Good613.47

avg incumbent reviews — the moat a new listing must climb

Price range

Okay€5.10–€24.64

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay61%

top-5 click share — leaders hold, buyers still browse

Avg price

Okay€10.62

avg listing price — sweet spot $15–$100

Brand share

Okay87%

top-5 brand share — brands hold most of the demand

Growth

Bad-6.3%

90-day search growth — must beat 0% to launch

Market size

Bad€53K

€53K/yr · 57K searches

According to Flapen's Amazon Germany niche tracking, ds18b20 is a €53K/yr Amazon Germany market (57K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 45/100.

Data updated Jul 13, 2026 · scored weekly · How we score niches

ds18b20 market data

Units sold / yr
4K–5K
avg 100–250/product
Revenue / yr
€42K–€53K
units × avg price
Conversion rate
8.8%
Avg BSR
#97
Page quality
0%
Prime
100%
Sponsored
82%
Out of stock
21.2%
Avg brand age
40 months
Avg seller age
220 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

40

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

10%

  • AZDelivery59%
  • Aideepen11%
  • Menibeuty10%
  • AYHYHLJZJ4%
  • Shelly3%
  • YUJUVI3%
  • Open — no brand owns it (5 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.3% search growth over the last 90 days.
5K3KPrime Day '24Spike '24Black Friday '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 2.6×

Top ds18b20 search terms

  • ds18b2050K/yr
  • arduino temperatursensor4K/yr
  • ds18b20 3m3K/yr
All search terms

Top ds18b20 products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%€5K20%€11K30%€16K40%€21K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

What buyers say about ds18b20

What buyers praise and complain about, mined from review topics.

What buyers love

Qualität insgesamt20%

“Super Produkt”

beworben Vs Tatsächliches Produkt14%

“Tut was er soll”

Preis-Leistungs-Verhältnis11%

“Super Preis”

Effizienz9%

“Funktioniert einwandfrei”

Konnektivität – insgesamt9%

“Einbinden über ESP-Home und Home Assistant ohne Probleme möglich”

Gesamtgröße7%

“Passen bei einem My-PV AC Thor9s”

Montage/Installation6%

“Die Installation verlief unkompliziert”

Materialqualität5%

“Gutes Material”

Genauigkeit insgesamt5%

“zuverlässig”

Kompatibilität – insgesamt2%

“die beiden Sensortypen lassen sich problemlos am OneWire Bus mischen.”

What buyers complain about

Haltbarkeit19%

“Nach vier Wochen sind 2 Stück ausgefallen”

Qualität insgesamt15%

“Müll”

Kompatibilität – insgesamt12%

“Inkompatibel mit Shelly Uni”

Defekt Material/Teile8%

“Von 6 gelieferten Fühlern war 1 Stück defekt”

Heizung8%

“Bei Temperaturen über 85 °C fällt das Gerät aus bzw. hängt sich auf”

beworben Vs Tatsächliches Produkt4%

“Die Beschreibung stimmt nicht”

Dicke4%

“Die Litzen sind allerdings sehr dünn, wenn man nicht die vorhandenen Enden löten möchte”

Speicherkapazität4%

“reicht der Speicherplatz des Arduino Uno R3 nicht aus, mit dem Uno R4 oder Nano Every geht's.”

Funktionalität insgesamt4%

“Eines nach 2 Tagen komplett ohne Funktion, ein anderes zeigt schnell schwankende Werte von +/- 10°”

Wasserbeständigkeit4%

“Nicht Wasserdicht”

Top return reasons

Kompatibilität – insgesamt20%
Funktionalität insgesamt20%
Gesamtgröße19%
Länge18%
Defekt Material/Teile5%
Heizung3%
Produktzustand3%
Konnektivität – insgesamt3%
Ethischer Handel/Fairer Handel3%
Qualität insgesamt3%

Common questions

Is ds18b20 profitable to sell on Amazon Germany?
The niche generates €53K/yr across 17 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -6.3%. Flapen's verdict: Skip it (45/100).
How competitive is the ds18b20 niche?
11 brands and 40 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in ds18b20?
Top complaints mined from reviews: Haltbarkeit, Qualität insgesamt, Kompatibilität – insgesamt. The return rate is 0.9%.
When does demand for ds18b20 peak?
Demand peaks in Jan–Nov–Dec; the busiest month runs 2.6× the quietest.
What does it cost to enter the ds18b20 niche?
Listings span €5.10–€24.64; the average listing price is €10.62 (sweet spot $15–$100). The average incumbent carries 613 reviews — the moat a new listing must climb.