---
product_id: 220560815
title: "Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System"
brand: "simplisafe"
price: "249 kr"
currency: DKK
in_stock: true
reviews_count: 5
url: https://www.desertcart.dk/products/220560815-entry-sensor-window-and-door-protection-compatible-with-gen-3
store_origin: DK
region: Denmark
---

# Compact 2.7-inch design 1000 ft wireless range Long-lasting pre-installed lithium battery Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System

**Brand:** simplisafe
**Price:** 249 kr
**Availability:** ✅ In Stock

## Summary

> 🔐 Elevate your home security game—because peace of mind never goes out of style.

## Quick Answers

- **What is this?** Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System by simplisafe
- **How much does it cost?** 249 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/220560815-entry-sensor-window-and-door-protection-compatible-with-gen-3)

## Best For

- simplisafe enthusiasts

## Why This Product

- Trusted simplisafe brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Discreet & Sleek:** Low-profile sensor fits almost anywhere without disrupting your style
- • **Seamless SimpliSafe Sync:** Instant alerts & smooth integration with Gen 3 system
- • **Customizable Silent Alerts:** Get secret notifications without triggering alarms
- • **Reliable Security Backbone:** Trusted by thousands with 4.8-star rating and robust performance
- • **Effortless Peel & Stick Setup:** Install in minutes—no tools, no hassle

## Overview

The SimpliSafe Entry Sensor is a compact, easy-to-install contact sensor designed for doors, windows, and cabinets. Compatible with the SimpliSafe Gen 3 system, it offers instant chime alerts, customizable silent notifications, and a long-lasting lithium battery. With a 1000-foot wireless range and sleek design, it seamlessly integrates into your smart home setup, providing reliable, real-time protection trusted by thousands.

## Description

desertcart.com : SimpliSafe Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System : Electronics

Review: Great system and customer service, installation is so easy. - So far so good. I use these on all doors and windows so if someone breaks into the house, either these will sound off or the motion sensors will (also by SimpliSafe). Good customer service when I've needed to call. We've been using SimpliSafe for a few years, and even have their subscription plan. Husband set the alarm off this morning, forgot to turn it off, and it was one of these new sensors that is on the front door. Installation was easy, don't have to have them touching, just within a 2" area. Most of ours are about 1" and work perfectly. I was able to disarm the system once hubs set it off by using the remote. Good system and we're happy to have it.
Review: Entry Sensors are a reliable choice - **SimpliSafe Entry Sensor - Window and Door Protection** As someone who takes home security seriously, I decided to expand my SimpliSafe security system with additional Entry Sensors for my doors and windows. I was looking for reliable and easy-to-install sensors that would integrate seamlessly with my existing SimpliSafe setup. **What I Like:** - **Easy Installation**: The installation process for these sensors is incredibly straightforward. They come with adhesive strips that make it easy to attach the sensor to any door or window frame without needing any tools. The entire setup takes just a few minutes, which is perfect if you’re not particularly handy. - **Seamless Integration**: These sensors integrate perfectly with the SimpliSafe system. Once installed, they immediately sync with the base station, and you can manage them through the SimpliSafe app. The integration is smooth and hassle-free, and the sensors work reliably with the system. - **Compact Design**: The sensors are small and discreet, so they don’t stand out or detract from the appearance of your doors or windows. The low-profile design is a big plus for maintaining the aesthetic of your home while still enhancing security. - **Reliable Performance**: The sensors have proven to be very reliable. They trigger alerts immediately when a door or window is opened, providing peace of mind that your home is being monitored effectively. There’s no noticeable delay, and the connection with the base station remains strong. **What I Don’t Like:** - **Adhesive Issues**: While the adhesive is convenient for installation, it might not hold up as well over time, especially in areas with high humidity or temperature fluctuations. In some cases, you might need to reinforce the sensors with additional adhesive or screws to ensure they stay in place. - **Price**: The sensors are a bit on the expensive side, especially if you need multiple units to cover all your entry points. While the quality and reliability justify the cost, it can add up quickly if you’re securing a larger home. - **Limited Customization**: The sensors don’t offer much in terms of customization. They work as intended, but it would be nice to have more options for sensitivity settings or other adjustments to better suit different environments. **Bottom Line:** The SimpliSafe Entry Sensor is a must-have addition for anyone looking to enhance their home security system. It’s easy to install, integrates seamlessly with the SimpliSafe ecosystem, and offers reliable performance. While the adhesive might not hold up under all conditions and the cost can add up, the peace of mind provided by these sensors makes them a worthwhile investment. If you’re expanding your SimpliSafe system or setting it up for the first time, these Entry Sensors are a reliable choice for protecting your home’s doors and windows.

## Features

- Entry sensor - Protect your doors, windows, cabinets and more.
- Compact design - Fits on almost any window, door or cabinet.
- Instant chime alerts - When a door or window is opened, the Base Station can sound a chime or tell you which sensor has been activated.
- Customizable alerts by sensor - Can set up Secret Alerts that won't sound the alarm but will send a discreet notification directly to your phone.
- Simple set up - Peel and stick installation or can permanently mount with included hardware.
- Long-lasting battery - pre-installed battery
- Compatible with the SimpliSafe Gen 3 home security system

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08B3J12L7 |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Battery Description | Lithium |
| Best Sellers Rank | #78 in Home Security Systems |
| Control Method | Remote |
| Customer Reviews | 4.8 4.8 out of 5 stars (4,348) |
| Date First Available | June 11, 2020 |
| Item Weight | 1.1 ounces |
| Item model number | ENS301 |
| Manufacturer | SimpliSafe |
| Maximum Range | 1000 Feet |
| Mounting Type | Wall Mount, Door Mount |
| Number of Batteries | 1 Lithium Metal batteries required. (included) |
| Product Dimensions | 2 x 0.12 x 2.7 inches |
| Sensor Technology | Contact Sensor |
| Smart Home Compatibility | Smart Home Compatible |
| UPC | 815017029612 |

## Product Details

- **Brand:** SimpliSafe
- **Color:** White
- **Compatible Devices:** Desktop, Laptop, Smartphone, Tablet
- **Power Source:** Battery Powered
- **Product Dimensions:** 2"L x 0.12"W x 2.7"H

## Images

![Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System - Image 1](https://m.media-amazon.com/images/I/41UwYJRyTmL.jpg)

## Questions & Answers

**Q: So these sensors are only motion based? Someone can literally smash out a window and climb through unless there is a glass break sensor within 20ft?**
A: Rather than buy glass break sensors for all of my windows, I have window sensors on all the windows and a motion detection sensor in each room. I have rooms with four and five windows. It saves money and does the same job.

**Q: if I put it in my car a connect it then drive off and return within range, will it automatically reconnect to the home base?**
A: You can disconnect and reconnect it by using the keypad.

**Q: Will this work with only a wyze lightbulb? i need it to turn on the light automatically when i open my door. i do not have a base... only a lightbulb**
A: No.  I use sensor lights

**Q: are these compatible with nest security systems**
A: This is a simple magnetic switch that communicates with the Simplisafe base station.  Not 100% sure but I suspect it is proprietary to the Simplisafe system.  You might want to contact Nest with this question.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great system and customer service, installation is so easy.
*by M***S on December 2, 2025*

So far so good. I use these on all doors and windows so if someone breaks into the house, either these will sound off or the motion sensors will (also by SimpliSafe). Good customer service when I've needed to call. We've been using SimpliSafe for a few years, and even have their subscription plan. Husband set the alarm off this morning, forgot to turn it off, and it was one of these new sensors that is on the front door. Installation was easy, don't have to have them touching, just within a 2" area. Most of ours are about 1" and work perfectly. I was able to disarm the system once hubs set it off by using the remote. Good system and we're happy to have it.

### ⭐⭐⭐⭐⭐ Entry Sensors are a reliable choice
*by H***Y on August 13, 2024*

**SimpliSafe Entry Sensor - Window and Door Protection** As someone who takes home security seriously, I decided to expand my SimpliSafe security system with additional Entry Sensors for my doors and windows. I was looking for reliable and easy-to-install sensors that would integrate seamlessly with my existing SimpliSafe setup. **What I Like:** - **Easy Installation**: The installation process for these sensors is incredibly straightforward. They come with adhesive strips that make it easy to attach the sensor to any door or window frame without needing any tools. The entire setup takes just a few minutes, which is perfect if you’re not particularly handy. - **Seamless Integration**: These sensors integrate perfectly with the SimpliSafe system. Once installed, they immediately sync with the base station, and you can manage them through the SimpliSafe app. The integration is smooth and hassle-free, and the sensors work reliably with the system. - **Compact Design**: The sensors are small and discreet, so they don’t stand out or detract from the appearance of your doors or windows. The low-profile design is a big plus for maintaining the aesthetic of your home while still enhancing security. - **Reliable Performance**: The sensors have proven to be very reliable. They trigger alerts immediately when a door or window is opened, providing peace of mind that your home is being monitored effectively. There’s no noticeable delay, and the connection with the base station remains strong. **What I Don’t Like:** - **Adhesive Issues**: While the adhesive is convenient for installation, it might not hold up as well over time, especially in areas with high humidity or temperature fluctuations. In some cases, you might need to reinforce the sensors with additional adhesive or screws to ensure they stay in place. - **Price**: The sensors are a bit on the expensive side, especially if you need multiple units to cover all your entry points. While the quality and reliability justify the cost, it can add up quickly if you’re securing a larger home. - **Limited Customization**: The sensors don’t offer much in terms of customization. They work as intended, but it would be nice to have more options for sensitivity settings or other adjustments to better suit different environments. **Bottom Line:** The SimpliSafe Entry Sensor is a must-have addition for anyone looking to enhance their home security system. It’s easy to install, integrates seamlessly with the SimpliSafe ecosystem, and offers reliable performance. While the adhesive might not hold up under all conditions and the cost can add up, the peace of mind provided by these sensors makes them a worthwhile investment. If you’re expanding your SimpliSafe system or setting it up for the first time, these Entry Sensors are a reliable choice for protecting your home’s doors and windows.

### ⭐⭐⭐⭐⭐ Not as simple as it would seem and no Apple HomeKit support
*by R***L on November 20, 2020*

Not as simple as it claims AND NO APPLE HOMEKIT SUPPORT. After a lot of research, we made the wrong decision and went with SimpliSafe. The videos and online manuals made setup appear simple. We purchased one keypad , 8 entry sensors, motion sensor, doorbell, door lock, and camera. Much of it was very simple to set up and some of it even very impressive. However, it is not even close to being as easy as they make it look. If your able to use a phone app, it is much simpler to setup than naming your devices with the archaic input on the keypad. Before I continue, let me reiterate that SimpliSafe does not work with HomeKit (Siri) although when we ordered our system this was supposed to be coming. Now everything I read says that basically Apple and SimpliSafe were not able to come to an agreement and there is no integration planned in the future (confirmed by tech support). This would have been a deal breaker as I would have never went with a system that doesn’t work with Apple. Back to installation, don’t expect a couple of hours to install it. Plan on a full day. The lock is not nearly as intuitive as it seems to install and none of the adapters were exactly what the instructions said we needed for our brand new construction townhouse. We picked the one that looked most like the suggested one and luckily it worked. You are actually replacing a physical deadbolt and this can take some time. The doorbell was very problematic. It repeatedly failed to connect to WiFi even though it is less than 8 feet from a repeater. The trouble shooter only offered the option of adding a repeater which we already had and was well within range. After less than two weeks the doorbell lost connectivity for no apparent reason. SimpliSafe support was very helpful even though they talk to you like you have no technology smarts at all, which is not my case. After walking me through a reset (tiny pin hole inside doorbell) that is not mentioned in any documentation I could find, we were able to get the doorbell back online and it has functioned correctly now for several weeks. Latest is that the camera has now lost WiFi connection even though the camera hasn’t moved and nothing has changed with our WiFi. After three tries to add the camera, it refuses to join the network. Again it has a very strong WiFi signal. Another call to customer support is going to be required to get the camera back online. Finally, the apps. We have the apps installed on an iPhone X, two iPad Pro’s, and Apple Watch 4. The phone app is just OK, but slow compared to other apps. There is no iPad app. You’re stuck with downloading the iPhone app meaning no horizontal use. Very disappointing. When the doorbell rings, I would expect the camera to automatically pop up on my phone. Nope. You get a notification and by the time the app opens and you can look at the camera, they are already gone. The Apple Watch app is totally worthless. It simply doesn’t work. Most of the time when you tap it is starts refreshing indefinitely. The couple of times that it did finish refreshing, the status of the alarm was totally wrong even though the phone had the accurate state of the alarm. Do your research and don’t believe all the recommendations that SimpliSafe supposedly has. There are several other security systems that I have send discovered, or are newer, that promise a better experience and Apple HomeKit integration. We use a different system in our vacation home that is far superior to SimpliSafe.

## Frequently Bought Together

- SimpliSafe Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System
- SimpliSafe Entry Sensor (Pack of 4) - Window and Door Protection - Compatible with The SimpliSafe Home Security System - Latest Gen
- SimpliSafe Motion Sensor - Compatible with Gen 2 Home Security System

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-04-22*