Overview
What the SimpliSafe Entry Sensor is
The SimpliSafe Entry Sensor is a compact, two-piece security device designed to monitor doors and windows throughout your home, alerting you the moment an entry point is opened while you're away or asleep. Part of the broader SimpliSafe home security ecosystem, this sensor pairs wirelessly with the SimpliSafe base station and mobile app, sending instant notifications to your smartphone whenever a protected door or window is breached. Its slim, unobtrusive design features two small components—one mounted on the door or window frame and the other on the moving part—that use magnetic contact technology to detect separation, triggering an alert within seconds.
Installation is refreshingly simple, requiring no tools, no drilling, and no professional setup. The sensor attaches with adhesive backing, making it ideal for renters or anyone who wants a quick, damage-free setup. Each sensor runs on a long-lasting watch battery that typically lasts years before needing replacement, and the SimpliSafe app conveniently tracks battery levels so you're never caught off guard by a dead sensor. The device's low profile and neutral white finish allow it to blend into most home décor, sitting quietly at the edge of doors and windows without drawing attention, which also makes it harder for intruders to spot and disable.
Beyond basic intrusion detection, the Entry Sensor integrates seamlessly into SimpliSafe's customizable security plans, allowing homeowners to arm and disarm their system remotely, receive real-time push notifications, and even connect the sensor to professional monitoring services for emergency dispatch. Multiple sensors can be placed across various entry points—front doors, back doors, sliding glass doors, and ground-floor windows—creating a comprehensive perimeter of protection that works in tandem with SimpliSafe's other devices like motion sensors and security cameras. For homeowners and renters seeking a reliable, low-maintenance way to safeguard vulnerable entry points without the cost or complexity of hardwired systems, the SimpliSafe Entry Sensor offers a practical, scalable solution that strengthens the overall security posture of any home.
Spec sheet
Technical specifications
| Battery Life | Up to 5 years |
|---|---|
| Connectivity | Wireless to Base Station |
| Dimensions | 2.5 x 1 x 0.6 in |
| Mounting | Adhesive or screw-in |
| Range | Up to 400 ft from base |
Feature set
Key features
- Detects door and window opening/closing via magnetic contact
- Wireless installation with adhesive or screw mounting
- Works with SimpliSafe Base Station and mobile app alerts
- Long-life replaceable battery (up to 5 years)
- Compact, low-profile white design
Field notes
Pros & cons
What works
- Quick peel-and-stick installation, no tools required
- Reliable instant alerts to phone when triggered
- Seamlessly integrates with existing SimpliSafe system
- Discreet size blends with most door/window frames
- Battery lasts years before replacement needed
What to watch
- Requires SimpliSafe Base Station to function, not standalone
- Occasional false alerts if magnet alignment shifts
- No local siren on the sensor itself
- Limited range if base station is far away
- Subscription needed for full remote monitoring features
The verdict
Should you buy the SimpliSafe Entry Sensor?
The SimpliSafe Entry Sensor is a reliable, easy-to-install component for monitoring doors and windows within the broader SimpliSafe security ecosystem. While it depends on the base station and benefits most from a monitoring plan, its simplicity, long battery life, and dependable alerts make it a solid choice for homeowners expanding or starting a DIY security setup.
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