eufy Entry Sensor E20 30-Pack: Installation and Placement Guide
By eufy - Built with Care | Home Security System & Robovacs | Published: 2026-10-26
Category: How-to Guides
Learn how to install and position the eufy Entry Sensor E20 30-Pack for reliable door and window monitoring. Get step-by-step setup tips and placement advice.
Quick Answer
Install your eufy Entry Sensor E20 sensors on the door or window frame using the dual-side mounting option, place them within the recommended gap, and use the bypass button for temporary deactivation without disabling your whole system.
Why Placement Matters for Your Alarm System
The eufy Entry Sensor E20 is designed for both left and right-side installation, giving you flexibility in tight spaces. However, the sensor's detection relies on the magnet aligning correctly with the main unit. Getting this alignment right is the difference between a sensor that works flawlessly and one that triggers false alarms or misses openings.
A common trade-off: mounting the sensor on the frame versus the door. Frame mounting is usually more discreet and protects the sensor from being knocked, but door mounting can be easier if your frame is uneven or has molding. The E20's dual-side design means you can choose either side without worrying about compatibility.
Understanding the Bypass Button
The E20's bypass button is a standout feature. Instead of disarming your entire alarm system to open a door or window, you can press the button to temporarily deactivate just that sensor. This is perfect for letting in a pet or grabbing a package without triggering the alarm.
Keep in mind that the bypass affects only that sensor; all others remain active. This means you can keep your perimeter protected while granting a single entry point temporary access.
Step-by-Step Installation and Placement
- Plan the mounting side: Decide whether to mount the sensor on the left or right side of the door or window frame. The E20 supports both, so choose the side that keeps the sensor out of the way and allows the magnet to align closely with the main unit. Check that the gap between the sensor and magnet is within the recommended distance (usually under 1 inch) to ensure reliable detection.
- Clean and prepare the surface: Wipe the mounting area with a dry cloth to remove dust and grease. If using adhesive tape, ensure the surface is smooth and non-porous for a strong bond. For uneven surfaces, consider using screws (if provided) for a more secure mount. A clean surface prevents the sensor from falling off and causing false alarms.
- Mount the main sensor and magnet: Peel the adhesive backing and press the main sensor onto the frame, then align the magnet on the door or window so the two parts face each other when closed. Ensure the alignment marks (if any) are level. Misalignment is the most common cause of sensor failure; double-check the gap and orientation before pressing firmly.
- Pair the sensor with your alarm hub: Open your eufy Security app, go to the alarm system settings, and select 'Add Device' or 'Add Sensor'. Follow the on-screen instructions to pair the E20. Make sure the sensor is within range of the hub (typically 30-50 feet). If pairing fails, move the sensor closer to the hub temporarily, then relocate it after successful pairing.
- Test the sensor: Close the door or window and verify the sensor shows 'closed' in the app. Then open it to confirm the alarm triggers or you receive a notification. Repeat for each sensor in the pack. Testing each sensor individually before finalizing placement saves you from discovering issues later.
- Use the bypass button when needed: To temporarily deactivate a sensor, press the bypass button on the sensor itself. This allows you to open the door without triggering an alarm. The sensor will reactivate automatically after a set period or when you re-arm the system. Remember that the bypass only affects that sensor; other sensors remain active, so you can keep your home protected.
Product Facts
- eufy Entry Sensor E20（30 Pack): The eufy Entry Sensor E20 supports both left and right-side installation for quick, error-free setup. You can mount the sensor on either side of a door or window, making installation easier in tight or unconventional spaces.
eufy Entry Sensor E20（30 Pack) - eufy Entry Sensor E20（30 Pack): The convenient bypass button lets you temporarily deactivate the sensor so you can open the door without triggering an alarm. You can let in a pet or grab a delivery without disarming your entire system, keeping other sensors active.
- eufy Entry Sensor E20（30 Pack): It features a CR123A battery with up to a 5-year lifespan, meaning less maintenance for you. Once installed, you can set and forget the sensor for years, reducing the hassle of frequent battery changes.
