Why Does My SimpliSafe Entry Sensor Keep Showing False Opens
- Magnet too far from sensor
- Sensor or magnet shifted position
- Door or window frame warped
Problem Description
Your SimpliSafe entry sensor reports the door or window as opened when it is actually closed and secure.
Symptoms
- Sensor shows open when door is closed
- Random open alerts with no activity
- Alarm triggers from sensor while away
- Sensor status flickers between states
- Multiple false alerts daily
Recognize these? Here's what usually causes it.
Common Causes
- Magnet too far from sensor
- Sensor or magnet shifted position
- Door or window frame warped
- Vibration causing momentary separation
- Low battery affecting sensor accuracy
Most fixes happen in the first 3 steps.
If false opens continue after repositioning and battery replacement, contact SimpliSafe for warranty replacement.
Tools & Requirements
These tools will help you complete this fix.
CR-2032 battery
Philips CR2032 3V Lithium Button Cell Batteries, 50 ...
Double-sided mounting tape
16 Pieces Double-Sided Mounting Tape Compatible with...
Ruler
Amazon Basics 9-Inch Magnetic Torpedo Level and Rule...
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Step-by-Step Solution
Check Sensor-Magnet Gap
The sensor and magnet must be within one-half inch of each other when the door is closed.
Verify Alignment
The magnet should align with the sensor indicator mark or the thicker end of the sensor.
Secure Loose Mounting
Remove the piece, clean the surface, and apply fresh double-sided mounting tape.
Needed for this step
16 Pieces Double-Sided Mounting Tape Compatible...
$5.89Account for Metal Interference
If mounted on steel, add a 1/8 inch plastic spacer between the magnet and metal surface.
Replace the Battery
Check battery status in the app. Replace with a fresh CR-2032 battery if low.
Needed for this step
Philips CR2032 3V Lithium Button Cell Batteries...
$19.99Quick Solutions
Still having issues? This is usually the deeper cause below.
If this comes back after following these steps, check whether a recent app or firmware update reset a default setting — the fix works, but the setting gets reverted silently.
Test the sensor by slowly opening and closing the door while watching the app status.
This issue almost always looks more complex than it is — the majority of cases trace back to a single setting, a stale credential, or a default that shipped wrong.
- Magnet too far from sensor
- Sensor or magnet shifted position
- Door or window frame warped
- Vibration causing momentary separation
- Low battery affecting sensor accuracy
Before you go — try one of these (they fix most cases).
Most popular upgrades chosen by SimpliSafe Entry Sensor owners.
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Official Manufacturer Manual
SimpliSafe provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your SimpliSafe Entry Sensor.
Source: simplisafe.com
Need More Help? SimpliSafe Support
Note: The contact information below connects you directly to SimpliSafe's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
How Does SimpliSafe Compare?
Before replacing your SimpliSafe device, see how it stacks up against alternatives in our full comparison guides.
