Is there any battery included in package?

Yes, a CR123A Battery is included.

Can I use my own router to pair with eufy Security Entry Sensor?

No, you can only use eufy Security HomeBase to pair with eufy Security Entry Sensor.

Can I use it in outdoor environment?

No, it is designed for indoor use only (Not Weatherproof).

How can I know if I need to change the battery?

There's low battery life notification, which will inform you when the battery level is lower than 10%.

How to install the entry sensor?

Step 1: Peel off the mounting tape and stick or screw the sensor onto the door or window you want to monitor. Step 2: Stick the magnet part onto the frame of this door or window near the entry sensor's printed ''Magnet'' wording. Note: Please make sure the distance between entry sensor and the magnet is shorter than 1.5in.

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Entry Sensor

eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase or HomeBase E

2-YEAR BATTERY LIFE: One CR-123A battery provides monitoring for 730 days.
FOR DOORS AND WINDOWS: Small and compact design fits onto any door or window frame.
100-DECIBEL SIREN: If a forced entry is detected, a siren as loud as a jackhammer will be triggered on HomeBase, and you’ll be notified instantly on your smartphone.
EASY INSTALLATION: Just peel off the mounting tape and stick the sensor onto the door or window you want to monitor.
WHAT'S INCLUDED: Entry Sensor, Magnetic Base, Mounting Screws, Instruction Manual, Happy Card.

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Entry Sensor

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2-YEAR BATTERY LIFE: One CR-123A battery provides monitoring for 730 days.
FOR DOORS AND WINDOWS: Small and compact design fits onto any door or window frame.
100-DECIBEL SIREN: If a forced entry is detected, a siren as loud as a jackhammer will be triggered on HomeBase, and you’ll be notified instantly on your smartphone.
EASY INSTALLATION: Just peel off the mounting tape and stick the sensor onto the door or window you want to monitor.
WHAT'S INCLUDED: Entry Sensor, Magnetic Base, Mounting Screws, Instruction Manual, Happy Card.

Entry Sensor

Entry Sensor
Protect Your Doors and Windows from Break-Ins with eufy Security Entry Sensor. Once a window or door is ajar by 1.5 inch, an alert will be sent to your smartphone, and a 100-decibel siren will go off on the HomeBase (can be disabled).

eufy Security: Less Trouble. More Secure. Ever Expandable.
Surveil your home from front to back for total peace of mind
Created by the same team as Anker—renowned for exceptional quality and innovation