Is fensterkontakt profitable to sell on Amazon Germany?

The niche generates €51K/yr across 23 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is -33.5%. Flapen's verdict: Skip it (41/100).

How competitive is the fensterkontakt niche?

16 brands and 93 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 75% of demand.

What do buyers complain about in fensterkontakt?

Top complaints mined from reviews: Akkulaufzeit, Konnektivität – insgesamt, Preis-Leistungs-Verhältnis. The return rate is 2.6%.

When does demand for fensterkontakt peak?

Demand peaks in Jan–Nov–Dec; the busiest month runs 2.6× the quietest.

What does it cost to enter the fensterkontakt niche?

Listings span €7.78–€67.95; the average listing price is €25.38 (sweet spot $15–$100). The average incumbent carries 1,089 reviews — the moat a new listing must climb.

fensterkontakt

Skip it

Soft demand (-33.5% this quarter) — this niche doesn't clear our bar today.

Avg price

Incredible€25.38

avg listing price — sweet spot $15–$100

Price range

Great€7.78–€67.95

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

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Returns

Good2.6%

return rate — above 5% kills the launch gate

Review moat

Good1,089.48

avg incumbent reviews — the moat a new listing must climb

Brand share

Good75%

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

Competition

Okay60%

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

Conversion

Bad1.4%

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

Market size

Bad€51K

€51K/yr · 139K searches

Growth

Bad-33.5%

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

According to Flapen's Amazon Germany niche tracking, fensterkontakt is a €51K/yr Amazon Germany market (139K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 41/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

fensterkontakt market data

Units sold / yr: 3K–3K; avg 100–250/product
Revenue / yr: €63K–€76K; units × avg price
Conversion rate: 1.4%
Avg BSR: #24
Page quality: 0%
Prime: 96%
Sponsored: 74%
Out of stock: 4.7%
Avg brand age: 49 months
Avg seller age: 199 days

Competition & brand share

The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 falling

Sellers

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

60%

Top 20: 97%

Open market

21%

Aqara34%
Tapo18%
SONOFF11%
Bosch6%
Homematic IP5%
LincoSoft5%

Demand & seasonality

Weekly Amazon search volume, last 84 weeks — -33.5% search growth over the last 90 days.

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

Open Trend

Top fensterkontakt search terms

fensterkontakt26K/yr -32.7%0.9% conv.
türsensor19K/yr -17.7%1.5% conv.
fenstersensor20K/yr -37.9%1.5% conv.
türkontakt12K/yr -25.9%0.9% conv.
tür sensor11K/yr -31.2%1.4% conv.
fenster sensor11K/yr -43.3%0.9% conv.
tür- & fenstersensoren7K/yr -21.0%0.6% conv.
matter fensterkontakt7K/yr -44.5%0.9% conv.
door sensor6K/yr -20.3%1.0% conv.
fensterkontakt matter4K/yr -44.4%0.9% conv.

All search terms

Top fensterkontakt 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Tapo T110 Smart Kontakt Sensor für Fenster-/Türsicherung Batterielebensdauer von mehr als 1 Jahr Sofortige App-Benachrichtigung Muss mit Tapo Hub verwendet Werden

Tapo€11.634.7★3,421 rev

Aqara Tür - und Fenstersensor Erfordert Aqara Hub Zigbee-Verbindung Drahtloser Detektor für Alarmanlage und Smart Home Kompatibel mit Zigbee Apple HomeKit Alexa und IFTTT

Aqara€12.064.5★5,997 rev

Aqara Tür- und Fenstersensor 3er Pack Erfordert Aqara Hub Zigbee-Verbindung Drahtloser Detektor für Alarmanlage und Smart Home Kompatibel mit Apple HomeKit Alexa IFTTT

Aqara€33.814.5★1,502 rev

SONOFF SNZB-04P Zigbee tür und fenstersensor intelligenter Fenster- und türkontakt Alarmanlage Erfordert Zigbee Hub Smart Home türsensor kompatibel mit Alexa und Google Assistant Intelligente Szenen

SONOFF€12.544.6★605 rev

Aqara Tür- und Fenstersensor P2 Matter over Thread Erfordert Thread Border Router Fernalarm Lokale Automatisierung Native Unterstützung von Matter Apple Home Google Home Alexa und SmartThings

Aqara€22.543.9★1,051 rev

Newest

by launch date

SONOFF SenseGuard DW Gen2 Zigbee Fenstersensor mit Sabotagealarm Fensterkontakt für Smart Home & Heizung Öffnen/Schließen Status kompatibel mit Home Assistant benötigt Zigbee Hub4er-Pack

SONOFF€32.4785 rev

5mo ago

FRITZ!Smart Control 350 | magnetischer Tür-/Fensterkontakt für Smart Home | erkennt geöffnete oder geschlossene Zustände | energieeffizienter DECT-ULE-Sensor | einfache Einrichtung

FRITZ!€31.0958 rev

5mo ago

SIEGENIA Smarter Fenstergriff Gen. 2 signalweiß - Matter kompatibel zur Einbindung in Smart Home Netzwerke mit Statusüberwachung zentrale Ver- & Entriegelung per Fernzugriff Smarter Montageassistent

SIEGENIA€67.9569 rev

10mo ago

4 Stücke Tür Fensterkontakt Smart Home LincoSoft Zigbee Fenstersensor Tuya Drahtlose Home Security Alarmanlage für Smarten Heizkörperthermostat Haus Garage kompatibel mit Alexa und Google Home

LincoSoft€35.0745 rev

10mo ago

Haozee Tür- und Fenstersensor Erfordert Zigbee Hub Zigbee-Verbindung

Haozee€7.7844 rev

12mo ago

What buyers say about fensterkontakt

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

What buyers love

Montage/Installation18%

“Alles bestens, leichte Installation”

Fühler10%

“Robuster und tadelloser Sensor”

Qualität insgesamt9%

“Top Produkt”

Konnektivität – insgesamt8%

“leichte Kopplung”

beworben Vs Tatsächliches Produkt6%

“Besser als Erwartet”

Kompatibilität – insgesamt5%

“Kompatibel mit kasa App”

Benutzerfreundlichkeit5%

“Einfach Home Assistant Integration”

Preis-Leistungs-Verhältnis4%

“Preiswerte Smart-Home Austattung”

Akkulaufzeit4%

“Austauschbare Batterien, leichte Kopplung, gute Anleitungen”

Effizienz4%

“Funtioniert super”

What buyers complain about

Akkulaufzeit18%

“frisst die Batterien”

Konnektivität – insgesamt8%

“Normales WLAN geht nicht ;-(”

Preis-Leistungs-Verhältnis8%

“Hohe Preise-”

Funktionalität insgesamt7%

“überhaupt nichts funktionierte”

Qualität insgesamt4%

“Qualität ungenügend”

Haltbarkeit4%

“Fallen nach wenigen Jahren reihenweise aus”

Gesamtgröße4%

“Die Fenstersensoren sind mit 9cm Länge recht groß”

Geräuschpegel3%

“Selbst bei niedrigster Lautstärke noch laut genug”

Montage/Installation3%

“War nicht zu installieren”

Kompatibilität – insgesamt3%

“Katastrophe, lässt sich null in Amazon geräte integrieren”

Top return reasons

Konnektivität – insgesamt21%

Kompatibilität – insgesamt21%

Funktionalität insgesamt17%

Gesamtgröße10%

Defekt Material/Teile7%

Akkulaufzeit4%

Reichweite2%

Produktzustand2%

Montage/Installation2%

Magnetische Stärke/Adsorption2%

Common questions

Is fensterkontakt profitable to sell on Amazon Germany?: The niche generates €51K/yr across 23 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is -33.5%. Flapen's verdict: Skip it (41/100).
How competitive is the fensterkontakt niche?: 16 brands and 93 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 75% of demand.
What do buyers complain about in fensterkontakt?: Top complaints mined from reviews: Akkulaufzeit, Konnektivität – insgesamt, Preis-Leistungs-Verhältnis. The return rate is 2.6%.
When does demand for fensterkontakt peak?: Demand peaks in Jan–Nov–Dec; the busiest month runs 2.6× the quietest.
What does it cost to enter the fensterkontakt niche?: Listings span €7.78–€67.95; the average listing price is €25.38 (sweet spot $15–$100). The average incumbent carries 1,089 reviews — the moat a new listing must climb.