Easy build-a-system tool

Get your ultimate system - we'll guide you step-by-step.
  1. Choose the sensors you need in the form below. Unsure what you need? Use our handy recommendations, and remember, you can always add sensors later.
  2. Once you've placed your order, we'll pre-program your system and sensors, so it'll be a cinch to install.
(Already have a SimpliSafe system? To expand your system with more sensors click here.)
All our home security systems come with a 60 day moneyback guarantee
Security System Control Panel
Base Station          "the brains of your system" The control center of your system. When triggered, it sounds an 85 dB siren. Built-in micro cell phone contacts our monitoring center - so no phone line is needed. learn more
check (included in every system) List Price: $299.99
Sale Price: $99.99
You Save 66%
Alarm System Keypad
Wireless Keypad          "the safest keypad in the industry" Arm and disarm your system. Can be placed up to 100 ft from Base Station. Beeps to distract intruders. learn more
check (included in every system) List Price: $99.99
Sale Price: $69.99
You Save 30%
Burglar Alarm Keyfobs
Keychain Remotes       "arming your system is as easy as locking your car" Easily arm and disarm your system, when you are within 100 ft of your Base Station. Recommendation: Get one for each member of the family that will be using the system. learn more
How many Keychain Remotes
do you need?
$24.99 each
 First one is FREE! extras are $24.99 each
motion detectors
Wireless Motion Sensors       "the thermal motion detective" Protects an entire room by detecting motion within 30 feet. Pet friendly. Can be placed up to 400 ft away from the Base Station. Recommendation: Order at least one for your home. They provide an important second layer of protection. Consider getting one for each room with 3+ windows on the ground floor. If in doubt, just get one. You can always add more later. learn more
How many Motion Sensors
do you need?
$29.99 each
 If in doubt, just get one. It's easy to add more later.
window and door sensors / alarm contacts
Wireless Entry Sensors    "the first line of defense for windows and doors" Protect doors and windows. Can be placed up to 400 ft away from the Base Station. Recommendation: Get Entry Sensors for all exterior front and back doors, because 80% of burglars gain entry via an exterior door. For greater protection, put them on ground-level windows too. A helpful tip: If a room has 3+ windows, you can save money by protecting the whole room with a Motion Sensor instead of securing each window with Entry Sensors. learn more
How many Entry Sensors
do you need?
$14.99 each
 Don't worry. It's easy to add more later, or return ones you don't need.
panic alarms
Wireless Panic Button       "press it to get help" Instantly triggers the alarm. Can be placed up to 400 ft away from the Base Station. Recommendation: Order a Panic Button for the master bedroom. learn more
How many Panic Buttons
do you need?
$19.99 each
Wireless alarm siren
Wireless 105 dB Additional Siren       "the burglar blaster" Install indoors or outdoors. Add one to make your SimpliSafe system 4 times louder (similar to sitting front row at a rock concert). Recommendation: If protecting a house or a business add 1-2 Extra Sirens. If you live in an apartment, you probably don't need one. learn more
How many Extra Sirens
do you need?
$59.99 each
Cellular Alarm Monitoring and Emergency Dispatch Service
24/7 Alarm Monitoring        "the police sent straight to your door" For less than 50 cents per day, you'll have a team of professional operators ensuring the safety of your home round-the-clock. Subscribe and your system's built-in micro cell phone will transmit your alarm signals to us. • No Contract  • No phone line needed  • Cancel anytime  • UL certified Recommendation: We highly recommend you subscribe. It’s the only way to be certain your home is protected 24 hours everyday. However, alarm monitoring is completely optional. You can cancel or re-activate it anytime and rest assured we will never charge any cancellation or activation fees. learn more
Yes! Professionally
monitor my home.

$14.99 per month
 Cancel anytime. Just call us.
email and sms text alerts of alarm activity
Instant Smart Alerts        "stay in the know" With Smart Alerts, your SimpliSafe Base Station will provide increased reporting directly to your smart phone or email.
  • Know when your alarm is triggered.
  • Know when your system is armed or disarmed (great for knowing when your family is home safe).
  • Know if your home has lost power - and when power is restored.
Recommendation: Great for families, businesses keeping track of employees, and vacation homes. Not sure? You can always add or remove this option at anytime. We never charge cancellation or activation fees. learn more
Yes! Add SMS Alerts to my monitoring plan.

$5 per month
 Cancel anytime. Just call us.
batteries included
Sensor Batteries        "powering your sensors for 5 years" All batteries are included and come pre-installed into each of your sensors. You can easily get more from your local drugstore, or from us - and they take just seconds to replace. learn more
(included in every system)
security system yard sign
Yard Sign—the proven burglar deterrent Homes without burglar alarms are 3 times more likely to be robbed. Your yard sign will ensure burglars know to avoid your home and move on the easier prey. Measures 9” x 9” with all-weather adhesive pre-applied on the back. Recommendation: One is usually enough. Get more, if you live on a corner and want to put one in each front yard.
How many Yard Signs do you need?
$6.99 each
security decals
Free Accessories        "everything you need"
  • 2 security decals
  • Pre-mounted 3M Command Strips for every sensor (extras included)
  • All batteries included and pre-installed
(included in every system)
new york times alarm review
Review your customized system:
1 Base Station Sale $99.99
1 Keypad Sale $69.99
Accessories & Batteries Included
Keychain Remotes 24.99 ea
Motion Sensors 29.99 ea
Entry Sensors 14.99 ea
Panic Buttons 19.99 ea
Extra Sirens 59.99 ea
Yard Signs $6.99 ea
SPECIAL FREE Keychain Remote $-24.99
Your System Total
24/7 Alarm Monitoring - Free Cellular
Instant Smart Alerts
Your Alarm Monitoring Total $0.00
Orders are shipped within 24 hours Mon-Fri
(view shipping estimate)
free shipping OFFER EXPIRES
Sunday February 5
return policy
batteries included
Lithium Batteries - powering your sensors for 5 years
Batteries are pre-installed in each of your sensors.
Changing a battery takes just 13 seconds

How does SimpliSafe's Monitoring compare to ADT's

SimpliSafe
adt
UL Certified Contract Price Cellular
YES NO $14.99/month FREE
YES YES - 3yr minimum $38-45/month $12 extra/month

Cancel anytime. Renew your subscribtion whenever

When we say cancel anytime, we mean it. Just call us at 1-888-957-4675. We'll ask you for your "safe word" to ensure it's really you cancelling. There is NO cancellation fee, ever.

If you decide you'd like to renew your subscrition, there is no nasty "activation" fee that other companies charge.

Our UL Certified Central Station is there for you 24/7

Established in 1975, our monitoring center has provided professional alarm response to millions of customers for over 30 years.

  • Multiple fiber optic data lines provide redundancy
  • Multiple uninterruptable power supplies and back-up gas generators
  • Unique and custom software programs maintain the flow of emergency dispatching even in the event of national disasters
  • Certified central station monitoring qualifies you for up to 25% off your homeowners insurance premium

How does Alarm Monitoring work?

A wireless sensor is triggered and
instantly alerts your Base Station

The alarm siren sounds
Base Station sends alarm signal over cellular network
Our professional staff receive your alarm signal
The operator contacts you and others you designate before calling the police

Unless you cancel the alarm with your "safe word", the operator will dispatch the police to your location to apprehend burglars and make sure you are safe.

Wireless Entry Sensors - the first line of defense

Easy to install on every type of door or window

The magnet goes on the door or window, and the sensor goes on the frame (or vice versa). Magnet can be placed up to 2 inches from the sensor, so sensors fit on all types of doors and windows.

SimpliSafe sensors come with the battery pre-installed and adhesive tape pre-applied, making installation a snap.

Door Chime

When your system is OFF and a door or window opens, the Base Station will sound a door-chime, so you'll know if someone's coming in.

How does it work?

The sensor detects whenever the magnet moves more than two inches away from it - so it knows whenever the door or window opens.

Keychain Remote Control - arming your system is as easy as locking your car

Swivel Loading - Rotate the keyring for easy loading onto your keychain.

Press this "Panic" button to trigger the siren immediately.

Press this "Away" button when you are leaving your home or office.

Press this "Off" button when you return.

  • Dimensions: 3" x 0.8"
  • Works when within 100 ft of your Base Station

SimpliSafe Wireless Keypad - the safest keypad in the industry

Back lit LCD display Home and Away modes:
When you go out, press the "Away" button to activate all the sensors. When you come home, press the "Home" button to deactivate the motion sensors, but still protect all the doors and windows. Dimensions: 6.5" x 3.5" Can be placed up to 100 ft from Base Station

Problem: Most wireless alarm systems have an Achilles heel - if a burglar smashes the keypad quickly enough, the police don't get alerted.

Solution: SimpliSafe has solved this problem by taking the "brains" out of the Keypad and putting them into a separate Base Station, which is hidden somewhere in your home or office building.

When an alarm is triggered, the Keypad beeps to distract burglars.

Meanwhile, the Base Station stays quiet while it alerts the monitoring service (which takes just a few seconds). Once the alert has been safely sent, the Base Station will blast the sirens.

Unlike other alarms, if a SimpliSafe Keypad were smashed, the alarm would continue to function.

SimpliSafe Motion Sensor - the thermal motion detective

Pet Friendly Your dogs and cats under 50lbs won't trigger the alarm. Got a Big Dog? Here's a tip for using our Motion Sensors:

Normally, the Motion Sensor looks straight out and down towards the ground. By turning the sensor upside down, it will instead look straight ahead and upwards. This way, you can place the sensor 5 ft off the ground, and the dog won't trigger it, but a person would.

Full Room Coverage

Detects motion within 30 feet. The sensor has a "field of vision" of 90 degrees, and looks downwards.

Can be placed up to 400 ft from Base Station
Dimensions: 3" x 2.25" x 1.75"

SimpliSafe Panic Button - press it to get help

If you ever need to get immediate help, just press the Panic Button for two seconds, which will instantly trigger the alarm.

Our monitoring center will then call you to check if you're okay. If you don't answer your phone, or if you answer but don't give your "safe word" we'll alert the police that you're in danger.

If you're a retail or business customer, we can program your system to activate a "silent panic" feature for you, which would allow you to signal for help without alerting the intruder.

  • Dimensions: 3" x 2"
  • Can be placed up to 400 ft from Base Station

SimpliSafe Additional Siren - the burglar blaster

This 105 decibel siren will feel like sitting in the front row of an ear-piercing rock concert.

Get two or more and your entire neighborhood will peek out of their windows. This siren will ensure any foolish burglar knows you're protected. Look out burglar - the sheriff's in town.

  • Weather resistant for outdoor use
  • Easily mount under an eave outside or adhere to a wall inside
  • Wireless, with a 1-2 year battery life (4 AA batteries included)
  • Dimensions: 6" x 3.5"
  • Add as many as you want. You're in charge

SimpliSafe Instant Smart Alerts - stay in the know

Feel greater peace of mind with SimpliSafe Smart Alerts. When you purchase Professional Alarm Monitoring with Smart Alerts, you'll have the benefit of an instant email or SMS text notifying you of events in your home, such as:
  • Alarm Event and Alarm Cancel Alerts: Get a back-up notification of all alarm events in addition to a call from our monitoring center
  • Activity Alerts: We'll send you notifications whenever anyone turns on or turns off your alarm. We'll send you details like which PIN was used to disarm your system, so you'll know when your kids, housekeeper, landlord or pet caretaker arrive at your home and when they leave
  • Error Alerts: peace of mind to know if something goes wrong with your system at home
  • Smart Alert Log: An online log of all alerts is available in your SimpliSafe Account

SimpliSafe Base Station - the brains of your system

Backup Battery lasts up to 4 days during a power outage. Base Station will recharge them once the power is restored to your home.
AC Power Plug-in
Plug-n-Play: Just plug in your Base Station and it will locate and control all of your sensors, making SimpliSafe the easiest security system in the world to install.
Built-in micro cell phone sends your alarm signals to our monitoring center instantly. It can also send you a text and email, whenever your system is armed or disarmed.
Built-in 85 Decibel Siren wails when your alarm is triggered.
Voice prompts guide you through installation.
Start-up greeting

Sorry, flash is not available.

Soft blue light glows, when your system is armed.
Phone and Internet: Connect to our monitoring center in three ways. You always have cellular, but if you'd like you can use your phone line or internet connection as well.