Free U.S. shipping over $69120-day money-back guaranteeBuy 2, save 10% · Buy 3+, save 15%Free TerraSignal on orders over $149Real people on the phone, (877) 428-172960,000+ families already readyRated 4.6/5 on Trustpilot

Quiet Protector

Questions? Call us(877) 428-1729 Or write to ussupport@quietprotector.com

TerraAlarm door and window alarm without Wi-Fi

Your front door is locked. Make sure the rest of the house isn't silent.

$59.00

108-decibel siren the second an opening moves
No Wi-Fi, no hub, no app, no monthly fee
Keeps working when the power or Wi-Fi goes out

Details

Two pieces: the alarm sticks to the frame, the magnet to the part that moves
108 dB siren, as loud as an ambulance
Runs on two AAA batteries with up to 2 years on standby
Press the button to arm or disarm
Works on windows, sliders, back doors and the connecting door of a hotel room

120-day money-back guarantee.

Shipping & returns

Free U.S. shipping over $69. Most orders arrive in 10 to 15 days, with a tracking link by email the day it ships. You have 120 days to decide: call (877) 428-1729 or email support@quietprotector.com for a full refund.

Your front door is locked. The rest of the house is still silent.

A door lock secures one opening. Most homes also have windows, sliders and back entries near where the family sleeps, and a quiet one can move without anyone hearing it. An alarm only helps if it is actually on the opening.

TerraAlarm vs wi-fi smart security system

	TerraAlarm	Wi-Fi smart security system
Power	Two AAA batteries	Wall power and home Wi-Fi
Power or Wi-Fi outage	Keeps working	Can go dark
Setup	Two pieces, stick on, press to arm	Hub, router and app
Monthly fee	None	Often a subscription
Travel	Goes in a suitcase for the hotel connecting door	Stays at home

What's inside, and why it matters

Single TerraAlarm: white siren unit with M, lock, unlock, SOS and power buttons, plus the magnet strip, white background

Sleep zone

One on the window beside the bed.

Two TerraAlarm units with magnets side by side, white background

Sliders and back doors

The openings most homes forget about.

Three TerraAlarm units with magnets, white background

Travel and family

A travel pair for hotels, extras for a loved one's home.

How to use TerraAlarm

1Stick the alarm on the framePlace the main unit on the window or door frame.

2Stick the magnet on the moving partLine up the small magnet on the sash, slider or door, right next to the alarm.

3Press to armPress the button. If the opening moves and the two pieces separate, the siren sounds.

TerraAlarm: questions before you order

What's the difference between TerraBolt and TerraAlarm?

TerraBolt is your door lock: it stops anyone from opening the door while you're inside, even with a key or a code. TerraAlarm is your opening alarm: a 108-decibel siren on any window, slider or back entry that sounds the second it moves.

How does it work?

Two pieces. One sticks to the frame, the other to the part that moves. When the opening separates them, the alarm fires. Press the button to arm or disarm.

Does it need power or Wi-Fi?

No. Each TerraAlarm runs on two AAA batteries with up to 2 years on standby. No router, no hub, no app, no monthly fee. If the power goes out or the Wi-Fi drops, it keeps working.

What if I don't like it?

You get a 60-night sleep guarantee. If by night 60 you don't sleep noticeably better, send it back for a full refund. No questions asked.

Families who buy this also keep

TerraBolt

TerraPore AutoSiphon

TerraBlanket

TerraSentinel, 2-pack

TerraAlarm: a door alarm with no Wi-Fi, no app and no monthly fee

TerraAlarm is a door and window alarm in two pieces: the alarm sticks to the frame and the magnet to the part that moves. The second the door, window or slider opens, a 108-decibel siren goes off, as loud as an ambulance.

There is no Wi-Fi, no hub, no app and no monthly fee, so it keeps working when the power or the internet goes out. It runs on two AAA batteries with up to 2 years on standby and arms with one button. Families use it on back doors and sliders, on a child's door at night and on the connecting door of a hotel room.

Pair it with a portable door lock on the same door, or see all our home safety products.