what are the dimensions of the sensors

Sensor Unit = W = 41mm D = 22mm H = 12mm Magnet Unit W = 25mm H = 10mm D = 10mm Hope this helps.

Does this device trigger Alexa routines?

So long as you have the gateway device, e.g. the E1, then yes. Otherwise it will be detected in Alexa but you cannot use it for anything.

do these things work with ZHA (in home assistant) or do i need zigbee2mqtt?

According to my Home Assistant friend the aqara devices work in Home assistant, but if you do use Home Assistant you can't use the Aqara App also. Only one or the other not both together. Hope this helps.

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door window sensor (Zigbee Door Sensor*3)

Product ID: 447422647

Details

Brand
Aqara
Item dimensions L x W x H
41 x 22 x 11
Item weight
46.5 Grams
Mounting type
Window Mount
Style
Door and

📶Zigbee wireless tech

🔔Instant alert notifications

🛠️Seamless smart home integration

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Description

🔐 Secure smarter, live freer — your home’s silent guardian.

LONG LASTING RELIABILITY - Compact, durable sensors with years of battery life ensure your home stays protected without constant maintenance.
VOICE CONTROLLED CONVENIENCE - Hands-free control via Apple HomeKit and Alexa lets you manage security with simple voice commands.
EFFORTLESS SMART HOME AUTOMATION - Automatically trigger other Aqara devices based on door/window status for a truly connected lifestyle.
INSTANT UNAUTHORIZED ENTRY ALERTS - Get notified the moment your door or window opens unexpectedly, keeping your home one step ahead of intruders.
WIDE COMPATIBILITY EASY INSTALLATION - Works flawlessly on doors, windows, drawers, and cabinets with up to 22mm gap allowance—no complicated setup required.

The Aqara Zigbee Door and Window Sensor 3Pack offers reliable, wireless security with instant alerts and seamless integration into smart home ecosystems. Compatible with Apple HomeKit and Alexa, these compact sensors support up to 22mm gaps and enable automated control of other Aqara devices. Requires Aqara Hub (sold separately) and a 2.4 GHz Wi-Fi network, delivering years of battery life and peace of mind for modern home security.

Specifications

ASIN	B09TP7VMKB
Best Sellers Rank	6,301 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 in Home Security Door & Window Sensors
Brand	Aqara
Country Of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (1,657)
Item Dimensions	41 x 22 x 11 millimetres
Item Highlight	for Alarm System and Smart Home Automation, Compatible with Apple HomeKit, Home Assistant, Alexa etc. Aqara Hub Required
Item Weight	46.5 Grams
Manufacturer	Aqara
Manufacturer Part Number	TZ-006
Model Number	MCCGQ11LM
Mounting Type	Window Mount or Door Mount
Number of Items	3
Number of Packs	3
Specific Uses For Product	home security, home automation
Style Name	Door and Window Sensor*3

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74158CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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