eufy Security Entry Sensor 4-Pack, Wireless Door and Window Sensors

Price: $99.99
(as of Oct 05, 2026 01:28:42 UTC – Details)

Product description

1 Essential Protection

2 Smart Alerts*

3 Easy Installation

1 Dual-Side Detection

2 Convenient Bypass Button

3 Long Battery Life

1 Local Security

2 Control Anywhere

3 Homebase Supported

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Customer Reviews

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2.9 out of 5 stars 3

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Price

$99.99$99.99

$249.99$249.99

$299.99$299.99

$159.99$159.99

Quantity

4

5

7

5

Included Motion Sensors

/

/

1

1

Included Homebase

/

1

1

1

Detection Technology

Magnetic Sensor

Magnetic Sensor

Magnetic Sensor+PIR

Magnetic Sensor+PIR

Tamper Protection

Supported

Supported

Supported

/

Battery Life

5 Years

5 Years

5 Years

2 Years

Does eufy Entry Sensor E20 require a connection to HomeBase? Which HomeBase models is it compatible with?

Yes, it needs to be connected to HomeBase. Ensure your HomeBase is running the required version: HomeBase Mini (v4.0.5.2 or later); HomeBase S280 / HomeBase 2 (v3.4.1.2 or later, released after 2021); HomeBase S380 / HomeBase 3; HomeBase Pro.

How long does the battery last?

Under normal conditions, it can last for 5 years.

Note: Data based on internal lab testing. Actual performance may vary depending on usage conditions.

What is the function of the bypass button?

Press the bypass button for 2 seconds to temporarily disarm the device. When pressed, opening the door will not trigger an alarm when the system is armed. Bypass lasts for 120 seconds, after which the sensor will return to normal.

What is the detection distance for opening and closing? What does dual-sided detection mean?

Detection works within a 0.8 in / 2 cm radius. Dual-sided detection means you can place the magnet on the left or right side of the main unit, and it will detect the opening and closing of doors or windows.

[Requires HomeBase to Operate] Compatible with HomeBase Mini (v4.0.5.2 or later), HomeBase 2 (v3.4.1.2 or later, released after 2021), HomeBase 3 (v3.7.2.6 or later), and HomeBase Pro (v4.1.4.3 or later). Ensure your HomeBase is updated to the latest version for optimal performance.
[Every Door. Every Window. Covered.] Protect what matters most with compact entry sensors that cover more entry points around your home.
[Local¹ Security, No Monthly Fee² ] Enjoy protection with a simple upfront purchase. No monthly fees*, no lock-ins.
[Dual-Side Detection] Supports both left- and right-side installation for quick, error-free setup.
[Convenient Bypass Button] Simply press the bypass button to temporarily deactivate the sensor, allowing you to open the door without triggering an alarm. Your other sensors remain active.
[Long-Lasting 5-Year Battery Life] Features a CR123A battery with up to a 5-year lifespan, meaning less maintenance for you.