7 models in this file
SimpliSafe Entry Sensors: Single, 4-Pack or Glassbreak?
As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
Securing a residence before boarding a long flight or heading out on an extended road trip requires a perimeter that alerts you the instant an exterior barrier is breached. SimpliSafe has built its reputation on modular, user-installed security hardware that eliminates complex wiring while delivering reliable wireless communication back to a central hub. For travelers and frequent flyers who need peace of mind while away from home, securing exterior access points with a reliable entry detection setup ensures you are alerted anywhere in the world. Evaluating a simply safe entry sensor lineup helps identify the exact hardware required to monitor every ground-level vulnerability before locking the front door behind you.
While each sensor in this lineup shares the core responsibility of reporting access events to your security setup, these six options differ significantly in pack quantity, condition tier, dimensional footprints, listed wireless reach, and whether they register physical contact separation or acoustic glass frequencies.
No. 1 of 7 · Simpli Safe
SimpliSafe Entry Sensors Compared
4.6 Amazon buyer average
Best for: Multi-window outfitting on a budget
What the listing says
- Control method: Remote
- Power source type: Battery powered
- Item type: Sensor
- Technology Contact sensor
- Dimensions 3 x 1.25 in
- Color White
Pros
- Four renewed sensors included
- 90-day limited warranty
- Generous two-inch sensing distance
Cons
- May exhibit minor cosmetic wear
Best for: Compact close-range perimeter monitoring
Pros
- Compact three-inch profile
- Included lithium metal battery
- Wall mountable frame
Cons
- One-foot listed maximum range
Best for: Budget single entry point replacements
Pros
- Two-inch magnet spacing allowance
- Includes mounting plate and screws
- Amazon Renewed guarantee protection
Cons
- Refurbished unit condition
Best for: Single door or isolated window security
Pros
- Included lithium metal battery
- 1000-foot operating range
- Tool-free peel-and-stick mounting
Cons
- Only monitors one access opening
Best for: Securing multiple doors and windows simultaneously
Pros
- Four pre-packaged contact sensors
- 1000-foot wireless communication range
- Discreet secret alert functionality
Cons
- Requires multi-point setup planning
| Model | Pack Quantity | Detection Range / Gap | Power Source | Mounting Method |
|---|---|---|---|---|
| SimpliSafe Entry Sensor (Pack of 4) | 4 Count | 1000 feet wireless range | Battery Powered (6V DC) | Screw In, Self Adhesive |
| SimpliSafe Entry Sensor (Single) | 1 Count | 1000 feet wireless range | 1 Lithium Metal battery (included) | Door Mount, Wall Mount |
| SimpliSafe Entry Sensor (Renewed) | 1 Count | 2 inches sensing distance | Pre-installed battery | Surface Mount |
| SimpliSafe Entry Sensor (Compact Single) | 1 Count | 1 foot maximum range | 1 Lithium Metal battery (included) | Wall Mount |
| SimpliSafe Entry Sensor (Pack of 4 Renewed) | 4 Count | 2 inches sensing distance | Pre-installed battery | Door Mount |
| SimpliSafe Glassbreak Sensor | 1 Count | 20 feet sound detection | 1 Lithium Metal battery (included) | Wall Mount, Shelf Placement |
No. 2 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Whole-Home Openings
4.2 Amazon buyer average
What the listing says
- 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…
- Customizable alerts by sensor – Can set up Secret Alerts that won't sound the alarm but…
- Simple set up – Peel and stick installation or can permanently mount with included hardware.
- Long-lasting battery – pre-installed battery
Preparing a house for an extended vacation often means sealing more than just the front door. The SimpliSafe Entry Sensor four-pack provides multi-point coverage in a single package, making it an efficient choice when outfitting an entire ground floor before departure. Designed to guard exterior doors, double-hung windows, and private interior cabinets, this bundle ensures multiple access pathways are linked directly to your hub without having to purchase individual boxes separately.
Each unit in this simplisafe entry sensor 4 pack operates on 6 volts direct current with a pre-installed battery, maintaining a lightweight profile of 1.12 ounces and measurements of 0.12 by 2 by 2.7 inches. Communication with the hub extends up to 1000 feet wirelessly, accommodating expansive floor plans where sensors must transmit through several interior partitions. The units support dual installation techniques via included permanent screw-in hardware or peel-and-stick adhesive pads, and they feature customizable Secret Alerts that quietly ping your smartphone without sounding an audible siren.
This multi-unit package is tailored for travelers who need to secure multiple ground-level entry points simultaneously before heading away. Because it supplies four coordinated units ready for pairing with the Gen 3 platform, it represents the ideal starting bundle for comprehensive home layouts, giving way to single-unit packaging only when you need to monitor an isolated spare entrance or replace a missing contact.
No. 3 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Single Door Security
4.5 Amazon buyer average
What the listing says
- 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…
- Customizable alerts by sensor – Can set up Secret Alerts that won't sound the alarm but…
- Simple set up – Peel and stick installation or can permanently mount with included hardware.
- Long-lasting battery – pre-installed battery
When an existing security perimeter is already running and only one additional access point requires coverage, purchasing bulk packaging creates unnecessary clutter. The single-unit SimpliSafe Entry Sensor delivers standalone coverage for an overlooked patio slider, a newly added side door, or a basement window before you leave town. Integrating effortlessly with simple safe home security setups, it connects directly into the Gen 3 ecosystem to maintain boundary integrity while your luggage is packed.
This simplisafe door sensor measures 2 inches long, 0.12 inches wide, and 2.7 inches high in a clean white finish. It operates using a single included lithium metal cell and connects across wireless frequencies with a maximum range of 1000 feet back to your system. Installation is managed via wall or door mounting with either peel-and-stick tape or included mounting hardware. When triggered, the sensor prompts the base station to sound an audible chime, announce the specific access zone, or silently dispatch an alert straight to your connected mobile device or desktop interface.
This standalone model suits apartment dwellers, minimalists, and travelers monitoring a single exterior door. Because it matches the technical capabilities of the multi-pack units while arriving as an individual contact, it provides precise boundary defense without leaving spare unused parts stored away in your luggage or storage bins.
No. 4 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Budget Refurbished Setups
4.7 Amazon buyer average
What the listing says
- Fits on all types of doors and windows — magnet can be placed up to 2" From the sensor.
- Setup is a snap. Place it on any door or window and 'add device' With your SimpliSafe Keypad.
- Chimes when your door or window opens letting you know someone is entering.
- Ready to work right out of the box, your entry sensor comes pre-installed with batteries and adhesive.
- Compatible with your SimpliSafe home security system.
- Optional installation tools included for your convenience — 2 screws and a Mounting plate.
Outfitting a home base between extended trips does not always require purchasing factory-fresh hardware. The Amazon Renewed edition of the SimpliSafe Entry Sensor gives budget-minded homeowners a professionally inspected and tested component that looks and works like new. Backed by the Amazon Renewed Guarantee for replacement or refund eligibility, this unit allows travelers to expand their system while keeping peripheral travel gear expenses manageable.
Carrying model number 456049, this renewed simplisafe gen 3 entry sensor features a modern white surface-mount form factor measuring 2 by 0.12 by 2.7 inches. The digital contact mechanism provides a sensing distance that allows the accompanying magnet to sit up to 2 inches away from the primary sensor body, offering valuable flexibility across uneven door frames or decorative window trim. It arrives ready to operate right out of the box with pre-installed batteries, adhesive backing, and an optional mounting plate complete with two screws, pairing to modern hubs supporting up to 100 system accessories.
This offering is best suited for budget-conscious homeowners who need a single replacement contact or want to add an extra boundary trigger without the cost of standard retail packaging. When several openings need identical coverage, multi-packs offer a more unified purchase, but for a single gap, this inspected unit is a practical pick.
No. 5 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Compact Perimeter Checkpoints
4.6 Amazon buyer average
What the listing says
- Control method: Remote
- Power source type: Battery powered
- Item type: Sensor
- Technology Contact sensor
- Dimensions 3 x 1.25 in
- Color White
Certain access points demand a dedicated layout, especially where auxiliary interior doors or nearby storage compartments require contact monitoring. The standalone SimpliSafe Entry Sensor offers perimeter monitoring using contact technology enclosed in a clean white chassis. For travelers looking to lock down specialized interior cabinets or nearby entry frames before departing, this component maintains an active watch.
According to its listed specifications, this remote-controlled contact sensor measures 3 inches long by 1.25 inches wide by 3 inches high and is powered by a single included lithium metal battery. Unlike expansive perimeter contacts, this unit lists a maximum communication range of 1 foot, making it specifically suited for localized monitoring where the sensor sits immediately adjacent to the receiving hardware. It installs via wall mount surfaces to keep tabs on close-proximity access thresholds without intrusive fixtures.
This compact option is designed for close-range monitoring scenarios where equipment rests in near-immediate contact with surrounding hardware. For expansive properties where transmitters must push signals through multiple rooms or across outdoor boundaries, standard 1000-foot models remain the necessary choice, while this variant provides focused, short-range contact reporting.
No. 6 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Multi-Window Renewed Bundles
4.8 Amazon buyer average
What the listing says
- Fits on all types of doors and windows — magnet can be placed up to 2" From the sensor.
- Setup is a snap. Place it on any door or window and 'add device' With your SimpliSafe Keypad.
- Chimes when your door or window opens letting you know someone is entering.
- Ready to work right out of the box, your entry sensor comes pre-installed with batteries and adhesive.
- Compatible with your SimpliSafe home security system.
Securing a vacation rental, a secondary property, or an entire apartment floor plan often requires multiple contacts without paying brand-new retail prices. The renewed pack of four SimpliSafe Entry Sensor units provides four inspected, pre-owned contacts under model number 656942082170. Each unit has been tested to meet cosmetic and functional standards, supported by a 90-day limited warranty alongside the Amazon Renewed Guarantee.
Every simplisafe window sensor in this pack uses binary open-closed digital output to detect entry through window sashes and door jambs. The internal reed switch detects magnetic separation with a sensing distance tolerance of up to 2 inches between sensor and magnet, accommodating offset sliding frames or older window sills. Each sensor arrives ready to operate with pre-installed batteries and adhesive strips, pairing swiftly through the Keypad menu using the Add Device command on New Generation platforms.
This bundle is ideal for travelers outfitting a multi-room living space or secondary retreat who want multi-point perimeter defense on a strict budget. If you require untouched retail packaging and factory literature, the brand-new four-pack remains the primary choice, but this renewed set provides identical multi-window utility at an accessible entry point.
No. 7 of 7 · Simpli Safe
SimpliSafe Glassbreak Sensor for Acoustic Perimeter Defense
4.6 Amazon buyer average
Best for: Detecting window intrusion without opening frames
What the listing says
- Glassbreak sensor – Detects the unique sound of breaking glass (up to 20 ft detection range) and triggers an alarm.
- Get instant phone alerts – The SimpliSafe App notifies you if there's trouble.
- Long-lasting battery
- Simple set up – Peel and stick installation, place on a shelf or can install using included hardware.
- Compatible with the SimpliSafe Gen 3 home security system
Pros
- 20-foot acoustic detection radius
- Four-year average battery life
- Flexible shelf or wall placement
Cons
- Does not monitor physical frame opening
A comprehensive perimeter setup requires more than just mechanical contact monitoring. Standard entry sensors cannot tell if an intruder bypasses a window latch entirely by smashing the glass. The SimpliSafe Glassbreak Sensor fills this critical gap for homeowners leaving properties unattended, providing acoustic listening defense that triggers an alarm the moment structural glass is compromised.
Engineered for the Gen 3 ecosystem, this specialized sound-detection unit monitors a 20-foot radius for the specific acoustic signature produced by shattering glass. It weighs 2.24 ounces with compact dimensions of 2.13 inches deep, 1.6 inches wide, and 2.13 inches high, allowing it to sit unobtrusively on a shelf or mount against a wall facing large windows. Powered by an included lithium metal battery delivering an average life of 4 years, it functions across residential interiors with an operating temperature rating of 60 degrees Fahrenheit. If glass breaks while you are traveling, the unit triggers an immediate response and delivers instant notifications straight through your connected smartphone app, complementing setups that also utilize a simply safe indoor camera to verify disturbances.
This unit is specifically intended for rooms containing patio sliding doors, picture windows, or French doors where physical frame separation might never occur during a break-in. It does not replace physical door contacts on swinging frames, but rather pairs alongside them to form an airtight boundary defense while you explore the world.
Before you choose
How to Choose the Right SimpliSafe Entry Sensors
Deciding which simplisafe sensor to buy begins with an accurate count of your home exterior access points. If you are preparing an entire home before an international journey, a simplisafe entry sensor 4 pack delivers the necessary volume to seal front, back, and ground-floor side openings without ordering multiple individual packages. Conversely, if your perimeter is already active and you only need to cover a newly exposed basement window or single exterior storage space, choosing a single standalone unit prevents unnecessary component clutter.
Next, consider your mechanical versus acoustic detection requirements. While standard entry contacts monitor the physical separation of a door or window sash, ground-floor living spaces with oversized picture windows or sliding patio glass remain vulnerable to shattering. Deploying a simplisafe glassbreak sensor within 20 feet of large glazed surfaces ensures that intruders cannot bypass your perimeter by shattering glass without moving the frame. Reviewing a detailed simpli safe entry sensors overview will help you position acoustic sensors where they provide the broadest line-of-sight coverage.
Installation constraints also dictate which sensor profile to choose. Standard contact sensors accommodate up to a 2-inch gap between the sensor body and its accompanying magnet, which is crucial for older trim, misaligned casings, or deep moldings. Both brand-new and renewed units include pre-installed adhesive pads for drill-free mounting, which is particularly beneficial for renters who need a temporary installation that leaves no residue when moving between travel destinations.
Finally, weigh the benefits of renewed inventory against brand-new retail components. Amazon Renewed options undergo thorough functional testing and include warranty coverage, making them practical choices for secondary properties, utility sheds, or budget-conscious setups. Conducting a thorough simplisafe sensor comparison ensures you select the exact blend of single units, multi-packs, and specialized acoustic sensors to keep your home sealed while you travel.
Questions people ask
FAQ
How far can the magnet be placed from a SimpliSafe door sensor?
The standard Gen 3 entry sensor allows a maximum sensing distance of up to 2 inches between the primary sensor body and the magnetic piece. This generous spacing provides ample tolerance for decorative moldings, offset window frames, or raised door trim without causing false open alerts.
Can a SimpliSafe window sensor trigger silent notifications instead of sirens?
Yes. Through the system settings, you can configure individual contacts to send Secret Alerts. This feature dispatches a private notification directly to your smartphone, tablet, or computer when an opening is breached without sounding the base station siren, making it useful for monitoring medicine cabinets or liquor storage while you are away.
What is the battery life on a SimpliSafe glassbreak sensor?
The glassbreak sensor is powered by an included lithium metal battery that boasts an average operating lifespan of 4 years. This extended battery longevity ensures continuous acoustic monitoring of your primary living areas and window banks across long periods of travel without frequent maintenance.
How many entry sensors can be added to a new generation SimpliSafe base station?
The new generation system supports up to 100 peripheral devices connected to a single hub. This substantial capacity allows you to add dozens of individual door sensors, window monitors, and glassbreak units across multi-story residences without overloading the wireless receiver.
What is the difference between an entry sensor and a glassbreak sensor?
An entry sensor uses contact technology to detect the physical separation of a door or window frame when an opening occurs. In contrast, a glassbreak sensor uses acoustic detection technology tuned to recognize the sound frequency of shattering glass within a 20-foot radius, protecting rooms against intruders who shatter panes without opening the window sash.
Prices, specifications and the feature lines above are read from the product listing and can change without notice. Every score is the average rating Amazon buyers left for that item; nothing on this page is written from handling the product.
