7 models in this file
SimpliSafe Entry Sensor Guide and Which Add-Ons to Pair
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SimpliSafe is widely recognized for accessible, modular home security hardware that eliminates messy hardwiring, multi-year service contracts, and rigid professional installations. For frequent travelers, digital nomads, and vacation homeowners who leave their properties vacant for weeks or months, deploying reliable battery-operated sensors is the most effective way to maintain real-time awareness from anywhere in the world. The manufacturer focuses on compact, lightweight monitoring hardware designed for rapid peel-and-stick installation, allowing users to secure access points quickly without damaging window trim or door casings.
While primary magnetic contact units track physical door and window movements, this lineup branches into multi-point perimeter bundles, interior wide-angle motion detectors, sound-activated glass shatter listeners, and environmental freeze monitors that alert you before plumbing disasters occur.
No. 1 of 7 · Simpli Safe
SimpliSafe Entry Sensors Compared
4.5 Amazon buyer average
Best for: Guarding internal cabinets and private lockers
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
Pros
- Compact 3-inch housing
- Battery powered operation
- SimpliSafe system integration
Cons
- Short 1-foot listed range
Best for: Securing a single vulnerable exterior door
Pros
- 1000-foot wireless range
- Lithium metal battery included
- Chime and secret alerts
Cons
- Only protects one opening
Best for: Travelers outfitting an entire ground floor
Pros
- 1000-foot wireless range
- Pre-installed batteries included
- Discreet Secret Alerts mode
- Peel and stick installation
Cons
- Adhesive requires clean surface
| Model | Sensor Type | Maximum Range | Power Source | Mounting Method |
|---|---|---|---|---|
| SimpliSafe Entry Sensor (Pack of 4) | Contact Sensor | 1000 feet | 6V DC (Pre-installed battery) | Self Adhesive or Screw In |
| SimpliSafe Entry Sensor (Single) | Contact Sensor | 1000 feet | 1 Lithium Metal battery (included) | Wall Mount, Door Mount |
| SimpliSafe Motion Sensor | Motion Sensor | 35 feet | 1 Lithium Metal battery (included) | Wall Mount, Shelf Placement |
| SimpliSafe Glassbreak Sensor | Sound Detection Sensor | 20 feet | 1 Lithium Metal battery (included) | Wall Mount, Shelf Placement |
| SimpliSafe Entry Sensor (Fixture) | Contact Sensor | 1 feet | 1 Lithium Metal battery (included) | Wall Mount |
| SimpliSafe Temperature Sensor | Temperature Sensor | 1000 feet | 1 Lithium Metal battery (included) | Wall Mount |
No. 2 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Whole-Home Perimeter Coverage
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
The SimpliSafe Entry Sensor four-pack provides multi-point perimeter coverage designed for properties with several accessible entry points. Operating as a two-piece magnetic contact switch, each unit alerts the system the moment a door, window, or cabinet swings open. With a maximum wireless reach of 1000 feet, these sensors easily bridge the gap between distant patio sliders or second-story bedroom casements and the central base. The listing specifies a 6-volt direct current power setup using pre-installed batteries, eliminating the need to locate fresh cells during initial deployment.
Each unit measures a slim 0.12 by 2 by 2.7 inches and weighs only 1.12 ounces, making it light enough to hold firmly in place using the supplied peel-and-stick adhesive pads. Homeowners who prefer a permanent bond can secure the brackets using the included mounting screws. When a perimeter breach occurs, the system can announce entry by chiming through the base station or sending a discrete push alert to your mobile device. The listing also highlights a Secret Alerts function, which lets you track opened medicine cabinets or home offices privately without triggering the loud sirens, making it a versatile tool when integrating with a broader simple safe home security plan.
This simplisafe entry sensor 4 pack suits frequent flyers and extended travelers who need to fortify multiple ground-level windows and secondary exterior doors simultaneously before taking off on a long itinerary. By bundling four contact switches together, it saves you from pairing single units piecemeal. If you only have one main door to monitor in a high-rise studio, however, the individual package is more practical.
No. 3 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Targeted Access Points
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
The single-unit SimpliSafe Entry Sensor delivers the same core magnetic perimeter monitoring as the bundled version, tailored for targeted installations. Engineered for compatibility with Gen 3 security hardware, it pairs seamlessly with modern SimpliSafe base stations over a wireless link spanning up to 1000 feet. The listing specifies that each sensor runs on a single lithium metal battery, which comes pre-installed in the housing so you can activate the hardware by pulling a single tab.
Physical dimensions match the standard Gen 3 form factor at 2 inches long, 0.12 inches wide, and 2.7 inches high in a neutral white finish. The hardware supports both wall-mount and door-mount orientations, adhering to wood, aluminum, or vinyl jambs via adhesive strips or mounting screws. System notifications are fully managed through the mobile app or web interface, supporting customizable door chimes as well as silent Secret Alerts that notify your smartphone directly when someone accesses a sensitive closet or liquor cabinet.
This standalone simplisafe entry sensor is ideal for solo travelers, apartment dwellers, or remote workers who need to add just one door or window to their existing layout without paying for surplus hardware. It provides an immediate security layer for a vulnerable basement door or detached garage entryway. If you need to secure multiple rooms or an entire residential floor, the four-pack offers a more complete out-of-the-box solution.
No. 4 of 7 · Simpli Safe
SimpliSafe Motion Sensor for Interior Hallway Sweeps
4.1 Amazon buyer average
Best for: Broad open-concept interior room monitoring
What the listing says
- Motion sensor – Add an extra layer of protection inside your home.
- Covers large rooms – With 90 degree field of view, place the motion sensor in a…
- Pet-friendly – Reduces false alarms by ignoring pets under around 50 lbs
- 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
- Pro Tip Mount your motion sensor in a corner for maximum room coverage.
Pros
- 90-degree field of view
- 30-foot motion detection
- Pet-friendly under 50 pounds
- Corner or shelf placement
Cons
- Does not monitor perimeter
The SimpliSafe Motion Sensor acts as a vital interior safety net, monitoring open indoor living spaces rather than physical entryways. Equipped with a 90-degree field of view, this passive infrared unit monitors rooms up to 30 feet away, with the technical specifications listing a maximum range of 35 feet. It communicates wirelessly with Gen 3 systems and runs on an included lithium metal battery, weighing an ultralight 4.54 grams for straightforward mounting.
SimpliSafe engineered this unit with pet-friendly detection algorithms that ignore animals weighing under approximately 50 pounds, preventing your dog or cat from tripping false alarms while you are away on business. The sensor supports flexible placement options, including flat-wall installation, corner brackets for maximum room visibility, or standalone positioning on a bookshelf. Pairing the hardware with your mobile device allows fast push notifications when movement is detected, and combining broad-room sweeps with a simply safe indoor camera ensures visual verification if an alert triggers.
This simplisafe motion sensor is the perfect choice for homeowners leaving their primary living quarters vacant for weeks at a time. Placed in a central hallway, stairwell, or living room, it catches intruders who manage to enter through unmonitored second-story windows. However, because it relies on heat signatures and movement, it cannot tell you whether an exterior door has been left unlatched, meaning it must be paired with magnetic perimeter switches rather than replacing them.
No. 5 of 7 · Simpli Safe
SimpliSafe Glassbreak Sensor for Ground-Floor Acoustic Monitoring
4.6 Amazon buyer average
Best for: Rooms with sliding glass patio doors
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 range
- 4-year battery life
- Instant smartphone notifications
Cons
- Only detects glass breakage
The SimpliSafe Glassbreak Sensor provides specialized audio-frequency detection that standard magnetic door contacts cannot supply. While an entry sensor requires the sash or door slab to swing open to trip the magnetic contact, this device actively listens for the unique acoustic frequency of shattering glass. It maintains an effective acoustic detection range of up to 20 feet in all directions, shielding large picture windows and multi-panel sliding patio doors from forced entry.
The unit measures 2.13 inches deep, 1.6 inches wide, and 2.13 inches high, weighing 2.24 ounces. According to the listing specifications, the included lithium metal battery provides an average operational lifespan of 4 years, making it exceptionally low-maintenance for travelers who take prolonged international trips. It operates within a standard residential temperature environment listed at 60 degrees Fahrenheit, and it mounts cleanly to walls or rests on flat shelving using the included adhesive backing or hardware.
This simplisafe glassbreak sensor is designed specifically for ground-floor living areas, sunrooms, and basement walkouts surrounded by large expanses of glass. It alerts you instantly via the smartphone app if an intruder breaks a pane without moving the frame. Because its microphone is tuned strictly to glass-shattering frequencies, it offers no utility on solid wood or steel entry doors, where traditional contact switches remain mandatory.
No. 6 of 7 · Simpli Safe
SimpliSafe Entry Sensor for Specialized Compartment Monitoring
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
This listing of the SimpliSafe Entry Sensor provides dedicated contact tracking for close-quarters installation on interior fixtures. Featuring dimensions listed at 3 inches long, 1.25 inches wide, and 3 inches high, this white battery-powered unit uses contact sensor technology to determine whether a monitored panel is open or closed. The listing confirms it includes one lithium metal battery and is engineered to communicate with compatible SimpliSafe security system components.
While standard external entry sensors list communication ranges up to 1000 feet, the technical specifications for this listing identify a maximum range of 1 foot, reflecting specialized localized mounting applications on individual fixtures, storage trunks, and locked boxes. Installation follows standard wall-mounting protocols, allowing travelers to affix the contact unit to stationary frames while mounting the magnet to moving doors or lids. Integrating a dedicated simply safe entry sensor gives direct status updates on high-value storage spaces through the system’s remote control protocols.
This model suits users who need to secure internal compartments, gun cabinets, desk drawers, or home safes while leaving their property in the care of housesitters or rental guests. It acts as an internal checkpoint rather than a perimeter gatekeeper. For standard residential exterior doors and windows spanning broad distances from the base, the standard 1000-foot models above should be selected instead.
No. 7 of 7 · Simpli Safe
SimpliSafe Temperature Sensor for Environmental Hazard Prevention
4.8 Amazon buyer average
Best for: Winter travelers preventing frozen pipe damage
What the listing says
- Protect your home from frozen pipes in winter and make sure your home is a safe…
- Sounds the alarm if the temperature drops out of threshold range, which is customizable to fit your needs.
- Protect precious belongings like instruments, paitings, and plants in a climate controlled room
- Ready to work right out of the box, Your temperature sensor comes pre-installed with batteries and adhesive.
- Compatible with your SimpliSafe Gen 3 home security system
- Setup is a snap. Place it in the room you want to monitor and 'add device' With your SimpliSafe Keypad.
Pros
- Customizable 0°F to 127°F range
- 1000-foot communication reach
- 100-sensor system capacity
- Pre-installed battery and adhesive
Cons
- Requires keypad device setup
The SimpliSafe Temperature Sensor shifts the focus from physical security to environmental protection, serving as an early-warning monitor against severe freeze damage and overheating. It features an adjustable threshold that triggers system alarms if ambient room temperatures fall below or rise above your customized parameters, spanning a broad operating range between 0°F and 127°F. This safeguard allows property owners to respond before falling indoor temperatures freeze domestic plumbing lines or summer heat waves endanger indoor plants.
Compact and discreet, the unit measures 1.12 inches long, 0.14 inches wide, and 2.11 inches high in white plastic. The listing highlights a 1000-foot wireless range back to the base station, powered by an included lithium metal battery with pre-applied adhesive for immediate mounting. Setup is completed via the SimpliSafe keypad using the Add Device menu, and modern Gen 3 base stations support up to 100 connected sensors across your property.
This simplisafe temperature sensor is an indispensable accessory for winter travelers, second-home owners, and frequent vacationers who leave properties unattended in cold climates. Installing the sensor near critical water pipes or utility closets ensures you receive immediate notifications if a furnace fails while you are away. It does not detect physical motion or forced entry, making it an environmental complement to simpli safe entry sensors rather than a standalone burglary deterrent.
Before you choose
How to Choose the Right SimpliSafe Entry Sensors and Add-Ons
Building an effective sensor array requires assessing physical vulnerabilities, lifestyle habits, and how long you plan to leave your residence unattended. Start by evaluating every ground-level opening. Standard contact sensors form the foundation of any perimeter defense because they trigger the instant a door or window seal breaks, sounding sirens before an intruder ever steps foot inside. If you have several casement windows or patio entries, purchasing multi-packs ensures uniform coverage across your main floor.
Interior layout dictates which simplisafe add-on sensors you should introduce. Large rooms with high-traffic corridors benefit from wide-angle motion sensors, which act as an interior failsafe if someone bypasses an unmonitored window. If your home features broad sliding glass doors or large picture windows, acoustic glassbreak sensors are necessary because standard magnetic contacts remain silent if the glass is smashed without moving the frame. Deciding which simplisafe sensor to buy ultimately depends on whether your main vulnerability lies in physical door jams, expanses of fragile glass, or central indoor transit paths.
For travelers away during seasonal transitions, environmental sensors are just as critical as anti-theft hardware. A freeze monitor placed in a utility room alerts you to furnace failures before water pipes burst, protecting your home against costly structural water damage. Verify hardware compatibility before adding units: all models featured here are modern simplisafe gen 3 sensors, designed to integrate seamlessly into current wireless setups with straightforward peel-and-stick installation.
Questions people ask
FAQ
How far can SimpliSafe entry sensors be placed from the Base Station?
Standard SimpliSafe Gen 3 entry sensors feature a maximum wireless communication range of up to 1000 feet in open air. In typical residential environments, walls, doors, and metallic appliances can reduce effective signal distance, but the 1000-foot rating provides sufficient power to navigate multi-story homes, basements, and detached access points.
Can pets trigger SimpliSafe motion sensors while owners are away?
SimpliSafe motion sensors use precision infrared engineering tuned to detect human heat signatures while ignoring family pets weighing under roughly 50 pounds. Mounting the sensor approximately 4 to 5 feet off the ground or angling it across a room allows common domestic cats and small-to-medium dogs to move freely without creating false alarms.
What is the difference between an entry sensor and a glassbreak sensor?
An entry sensor uses a two-piece magnetic contact switch that triggers an alarm only when a door or window frame physically separates. A glassbreak sensor uses an acoustic microphone tuned to the specific audio frequency of shattering glass, detecting break-ins within a 20-foot radius even if the door or window frame never moves.
How do Secret Alerts work on SimpliSafe contact sensors?
Secret Alerts allow you to track specific entry sensors privately through the SimpliSafe smartphone application. When activated on a specific sensor, opening that door or cabinet sends an instant push notification to your phone without chiming the Base Station or sounding the 105-decibel main alarm siren, making it useful for private closets or liquor cabinets.
Can the SimpliSafe temperature sensor prevent burst pipes during winter vacations?
The SimpliSafe temperature sensor detects hot and cold extremes across a customizable range from 0°F to 127°F. By configuring the low-temperature alert to notify you if the indoor climate drops near freezing levels, you receive early warnings of heating failures while traveling, giving you time to contact neighbors or plumbers before pipes burst.
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.
