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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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

📱Smartphone app control

🔋2-year battery life

🔔100-decibel siren alert

S$56

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Description

🚪🔒 Secure your space, stay connected, and never miss a beat!

INSTANT INTRUSION ALERTS - Get real-time notifications and a piercing 100dB siren to deter intruders immediately.
COMPACT VERSATILE DESIGN - Discreetly fits on any door or window frame for sleek, unobtrusive protection.
SEAMLESS SMART INTEGRATION - Effortlessly monitor doors and windows via the intuitive eufy Security app.
UNMATCHED BATTERY LONGEVITY - Keep your home secure for 800 days without a battery change.
OPTIONAL 24 7 PROFESSIONAL MONITORING - Upgrade to round-the-clock emergency response for ultimate peace of mind.

The eufy Security Entry Sensor offers reliable door and window monitoring with a powerful 100-decibel siren and 2-year battery life. Designed for indoor use and controlled via smartphone app, it requires the eufy HomeBase for seamless integration. Optional 24/7 professional monitoring enhances your home security with emergency response services, making it a smart, long-lasting solution for modern homeowners.

Specifications

ASIN	B07GJJZZ3G
Audible Noise	100 Decibels
Battery Description	Lithium
Best Sellers Rank	#90 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 (2,010)
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	0.15 Pounds
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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S$56

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

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TrustScore 4.5 | 7,300+ reviews

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