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 and Window Sensor Kit - 3pcs (Aqara Hub is Required), Zigbee, Wireless Mini Contact Sensor for Alarm System and Smart Home Automation, Compatible with Apple HomeKit, Alexa, Works With IFTTT

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

📶400-inch wireless range

🔋long-lasting lithium battery

🛡️instant unauthorized entry alerts

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€ 85.84

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Stay one step ahead with smart security that blends in and stands out.

EASY DIY INSTALLATION - Strong adhesive strips and clear instructions make setup a breeze—no tools required.
COMPACT SLEEK DESIGN - Minimalist sensor fits discreetly on doors, windows, drawers, and cabinets without disrupting your decor.
RELIABLE SECURITY ALERTS - Get real-time notifications and local alarms the moment your door or window opens unexpectedly.
ROBUST WIRELESS PERFORMANCE - 400-inch Zigbee range ensures consistent connectivity across your entire home.
SEAMLESS SMART HOME INTEGRATION - Effortlessly syncs with Apple HomeKit, Alexa, and IFTTT for hands-free control.

The Aqara Door and Window Sensor Kit includes three compact, wireless contact sensors that connect via Zigbee to the Aqara Hub (sold separately). Designed for seamless integration with Apple HomeKit, Alexa, and IFTTT, it delivers instant alerts and local alarms upon unauthorized entry. With a 400-inch wireless range, long-lasting lithium battery, and easy adhesive installation, it’s a sleek, reliable solution for smart home security and automation.

Specifications

ASIN	B09TP7VMKB
Best Sellers Rank	6,878 in DIY & Tools ( See Top 100 in DIY & Tools ) 4 in Home Security Door & Window Sensors
Brand	Aqara
Country Of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (8,268)
Item Dimensions	41 x 22 x 11 millimetres
Item Weight	46.5 Grams
Manufacturer	Aqara
Manufacturer Part Number	TZ-006
Model Number	MCCGQ11LM
Mounting Type	Window Mount or Door Mount
Style Name	Door and Window Sensor*3

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