# eufy Entry Sensor E20 Door Contact Sensor

The eufy Security Entry Sensor E20 is a door and window contact sensor for a compatible eufy HomeBase. Its left-or-right installation and temporary bypass button suit entry points where access is sometimes needed while the alarm is armed.

- [Original product page](https://bargaincloverdeals.com/product/eufy-entry-sensor-e20-door-contact)
- [View offer](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)
- Market: IE
- Language: en-IE
- Currency: EUR
- Brand: eufy Security
- Model: Entry Sensor E20
- Category: Electronics > Smart Home & Security > Alarms & Sensors
- Price: 24.90 EUR
- Previous price: 34.99 EUR
- Discount: 29%
- Price checked: 2026-11-13T12:40:51.148Z
- Rating: 4.7 / 5
- Reviews: 84

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Supports installation with the magnet on either the left or right side of the main unit.
- A bypass button temporarily disarms the sensor. The listing says bypass lasts 120 seconds.
- Requires a compatible HomeBase, with minimum software versions specified for supported models.
- The stated communication range of 200 m is based on open-field testing.

## Pros

- Left- or right-side magnet placement gives more flexibility when fitting the sensor to a door or window.
- The temporary bypass function is useful when opening a protected door without triggering an alarm, while other sensors remain active.
- The listing describes app alerts, HomeBase chimes and automation options with the required equipment and app version.

## Specifications

### Identity
- Brand: eufy Security
- Model: Entry Sensor E20
- Sensor technology: contact
### Connectivity and controls
- Control methods listed: App, Push Button
### Installation
- Mounting type listed: Door Mount

## Before you buy

- Requires a compatible HomeBase: Mini from v4.0.5.2, HomeBase 2 from v3.4.1.2 and released after 2021, HomeBase 3 from v3.7.2.6, or HomeBase Pro from v4.1.4.3. The listing also says to use the EU version of HomeBase. The claimed 200 m range is open-field only, and the stated five-year battery life is based on internal testing and may vary with use. The bypass is described as lasting 120 seconds. Advanced alerts and automation require eufy app v6.0.00 or above.

## A good fit for

- eufy HomeBase owners adding contact detection to a door or window.
- Households that sometimes need to open an armed entry point using a temporary bypass.

## Less suited to

- Buyers without a compatible, sufficiently updated HomeBase.
- Buyers seeking a standalone sensor or a stated in-building range guarantee.

## Customer feedback

Customer feedback describes the sensor as reliable, good in quality and easy to set up, while connectivity receives mixed feedback. Those reports may matter for a HomeBase-based entry setup, particularly where dependable communication is important. The listing requires a compatible, updated HomeBase, and its 200 m range claim applies to open-field conditions rather than guaranteeing range inside a home.
- Positive themes: Customers report reliable detection of door and window openings.
- Positive themes: Feedback describes the product quality positively.
- Positive themes: Customers report that setup is easy.
- Mixed feedback: Connectivity feedback is mixed.

## Frequently asked questions

### Does the eufy Entry Sensor E20 work without a HomeBase?
No. The listing says it must connect to a compatible HomeBase with the required software version.
### Which HomeBase models are listed as compatible?
HomeBase Mini, HomeBase 2, HomeBase 3 and HomeBase Pro are listed, each with a minimum software version. The listing specifies the EU version of HomeBase.
### What does dual-side detection mean?
The magnet can be placed to the left or right of the main sensor unit. The listing gives a detection distance of 0.8 inch / 2 cm.
### How does the bypass button work?
The listing says to press it for 2 seconds to temporarily disarm the sensor. Bypass lasts 120 seconds, after which the sensor returns to normal.
### What range and battery life are claimed?
The stated HomeBase communication range is up to 200 m in open-field conditions. Battery life is claimed as five years under normal conditions based on internal lab testing, and actual performance may vary.

## Alternative options

- [eufy Security Video Doorbell E340, Dual Cameras, 2K FHD, 8GB Local Storage \| No Subscription,Head-to-Toe View,Wireless or Wired,Color Night Vision,Two-way talk,AI motion/Package Detection, 2.4 GHz Wi-Fi](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)
- [eufy Security 5-Piece Home Alarm Kit, Home Security System \| Keypad, Motion Sensor, 2 Entry Sensors, Home Alarm System, Control from the App, Links with eufyCam, Optional 24/7 Protection](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)
- [eufy Security Video Doorbell Add-On Chime, Indoor Chime, Requires Video Doorbell E340/C31/C30, No-Delay Ring, Adjustable Volume, 8 Fun Ringtones, Not Compatible with HomeBase S280](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)
- [Amazon Echo Dot Max \(newest gen\), Alexa speaker with room-filling sound and built-in smart home hub, Graphite](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)

## Add-ons

- [eufy Security Home Alarm System Motion Sensor, 100° Coverage, 30 ft Detection Range, 2-Year Battery Life, Adjustable Sensitivity \(HomeBase Required\)](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)
- [eufy Security S380 HomeBase \(HomeBase 3\),eufy Edge Security Center \| Local Expandable Storage up to 16TB, Product Compatibility, Advanced Encryption, No Monthly Fee](https://bargaincloverdeals.com/visit/eufy-entry-sensor-e20-door-contact)

## Images

![eufy Entry Sensor E20 Door Contact Sensor — 1](https://bargaincloverdeals.com/i/wEFK0bikFO24ikZnMCNHfzOo5AUuyxyzQ2uDtYjFi2r-KU2TNV62q5sK8eoPXxCl5j1q9CZGCg_syNSVRxCgMThXIdCPx6op7E576CBL51iPkZsT.jpg)

![eufy Entry Sensor E20 Door Contact Sensor — 2](https://bargaincloverdeals.com/i/mxlnlmTCFotEUgkwel9deCSpCQ4zfb-iScSTVfAh7NW6twFzZGlmwWiCCiKU8IIzfmdQ1n-yrQbxVciwYChD_iq8kj8PoyyZwiGreXtpdMc8IRqIF45SYHc6.jpg)

![eufy Entry Sensor E20 Door Contact Sensor — 3](https://bargaincloverdeals.com/i/pYu0IMEpMdKb82OmVwh_cG5S5xivPzcG8EYDT5y5vMEgHtfulJIyOA4OSltoipcq3tyXqzcbbkFWlpP_jnrjGlr3VbuFi9WA9uD1iKrNTdrIyCSiy4sB4ILW.jpg)

![eufy Entry Sensor E20 Door Contact Sensor — 4](https://bargaincloverdeals.com/i/X85Gcdd9ggGCRv7e7Y_Cqq1C0zcfqPrltK3wbmzSgACVDQa8IA0Y-s2C7bTF1qGruqNaHiZqoN8Y5nWuVFYFmeDyLkxvrgiwKwIqxDtqeYtFFPN5oj-bZ3TV.jpg)

![eufy Entry Sensor E20 Door Contact Sensor — 5](https://bargaincloverdeals.com/i/EBOqOgs9TOetaYflSm4lysgGxgXNCTylz7PpkMFhNpY4y9dsNV0lMFo-Ro08pi_fqJrMXCDmx-o7HoGNHyqi2LAwb9tYAaJ7ftB11aH-ewC3OHhSwEEe-s4F.jpg)

![eufy Entry Sensor E20 Door Contact Sensor — 6](https://bargaincloverdeals.com/i/CgtP2yNbI6rjta_BBkx_Iy99s8lvbrr-36ZVIM3gRhG9MIriZWwKsexJd2qdBniClBT85p43APweP36vmt9sRzhxTC-Y_TM9RdQTkKBUILRqzFALUKnPxWyA.jpg)