Notification if a door is left open? Is there a way to set a delay lets say 5 mins so if the door left open for 5 min or more, it notifies via alert?

Yes, after 5 mins and many other options. Please see the video.

How many eufy security ***entry sensors** can be used per base station? how many cameras can i use simultaneously with said sensors?

One HomeBase can support up to 16 cameras and 16 entry sensor.

Does the updated homebase 2 firmware expose these sensors to apple's homekit?

We are sorry that these sensors cannot support homekit.

If power is lost and you have the plus monitoring service will you get notified of the power outage?

I am going to say no. It has to check in with them over the Internet and there could be numerous reasons that communications don't reach them. I would be surprised if it does actually check in regularly instead of just waiting to send an alarm alert. On my old alarm it has a battery backup and uses the landline phone to call in issues. So, if the power goes out it will use the battery backup to make a landline call and then the monitoring station will call me. Usually when the battery is low. I could be wrong but it's unlikely this configuration could support that notification. If you have a UPS that keeps your internet powered up then it, or the PC, can be configured to send an alert then it goes to battery.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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eufy Security Entry Sensor, Detects Opened and Closed Doors or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor Use Only, Requires HomeBase, 24/7 Monitoring Optional

eufy Security Entry Sensor, Detects Opened and Closed Doors or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor Use Only, Requires HomeBase, 24/7 Monitoring Optional

Product ID: 123444747

Details

Brand
eufy Security
Color
white
Compatible Devices
Smartphone
Power Source
Battery
Product Dimensions
1.1"L x 0.87"W

🔊100-decibel siren alert

🔋2-year battery life

🚪Fits any door/window frame

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E£ 5286

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Elevate your home security game—because peace of mind is the new luxury.

UNMATCHED 800 DAY POWER - Enjoy hassle-free security with a single battery lasting over two years—set it and forget it.
INSTANT INTRUSION ALERTS - Get real-time smartphone notifications the moment your door or window is opened.
LOUD 100 D B SIREN DEFENSE - Deter intruders instantly with a powerful siren triggered on forced entry.
SEAMLESS DOOR WINDOW FIT - Sleek, compact design that blends effortlessly on any entry point for discreet protection.
OPTIONAL 24 7 PROFESSIONAL MONITORING - Upgrade to round-the-clock emergency response for ultimate peace of mind.

The eufy Security Entry Sensor is a compact, indoor contact sensor designed to monitor doors and windows with precision. Featuring a robust 2-year battery life, it pairs exclusively with the eufy HomeBase to send instant alerts and trigger a 100-decibel siren upon forced entry. Optional 24/7 professional monitoring enhances emergency response, making it a reliable cornerstone for any smart home security ecosystem.

Specifications

ASIN	B07GJJZZ3G
Audible Noise	100 Decibels
Battery Description	Lithium
Best Sellers Rank	#99 in Home Security Systems
Brand	eufy Security
Built-In Media	Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner's Manual, Happy Card.
Color	white
Compatible Devices	Smartphone
Control Method	App
Customer Reviews	4.6 4.6 out of 5 stars (2,004)
EU Spare Part Availability Duration	2 Years
Global Trade Identification Number	00848061058666
Item Dimensions L x W x H	1.1"L x 0.87"W x 2.91"H
Item Weight	2.4 ounces
Manufacturer	eufy security
Manufacturer Warranty Description	12-month warranty and provide friendly, easy-to-reach support.
Mfr Part Number	AK-848061058666
Model Number	T8900
Mounting Type	Door Mount, Window Mount
Number of Batteries	1 Lithium Ion batteries required. (included)
Power Source	Battery Powered
Sensor Technology	Contact Sensor
Size	1 Count (Pack of 1)
Smart Home Compatibility	Smart Home Compatible
UPC	848061058666
Unit Count	1.0 Count
Wattage	7.5 watts

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