Tap the arm button on a Qolsys panel or in the Alarm.com app and you get a short menu: Stay, Away, and on newer systems, Night. Each one arms a different group of sensors, and picking the wrong one is how a sleepy walk to the kitchen turns into a siren in the middle of the night.
Arm stay vs arm away comes down to who is home. Arm Stay protects your doors and windows while people are inside. Arm Away also turns on the interior motion sensors once everyone has left. Arm Night adds a few interior sensors your installer chooses for overnight coverage.
Table of Contents
Arm Stay vs Arm Away vs Arm Night at a Glance
Each mode arms a different set of sensors and handles the delays its own way. Arm Stay covers the perimeter only, Arm Away adds every interior motion sensor, and Arm Night covers the perimeter plus the interior zones programmed for nighttime. The table compares arm stay vs arm away vs arm night in the most common setup.
| Mode | Doors and windows | Interior motion sensors | Exit and entry delay | Best time to use it |
|---|---|---|---|---|
| Arm Stay | Armed | Bypassed, so you can move freely | Entry delay on delay doors unless you choose No Entry Delay | Home and awake: evenings, weekends, working from home |
| Arm Away | Armed | Armed | Exit countdown to leave, entry countdown to disarm when you return | Nobody home: work, errands, travel |
| Arm Night | Armed | Only sensors programmed as night zones are armed | Depends on how your panel is programmed | Bedtime, with the household upstairs or in bedrooms |
Details vary by panel and by how your installer programmed the system, so treat the table as the typical setup rather than a promise about your keypad. Your installer can tell you which sensors fall into each group.
What Arm Stay Does
Arm Stay arms the sensors on your exterior doors and windows and bypasses the interior motion detectors. You can cook, watch a movie, and let the dog wander without setting anything off. If someone opens a protected door or window, the system responds. Use it any time people are home and awake.
Good times to arm Stay:
- Evenings, once the family is in for the night
- Working from home with the doors locked
- Older kids or a sitter home alone, each with their own user code
- Any time you want the back slider protected while you are in another part of the house
Opening a door from the inside still counts while you are armed in Stay. A delay door, usually the front door or the door from the garage, starts the entry countdown, and you have until it ends to disarm. An instant door, such as a back slider, sets off the alarm the moment it opens. Let the dog out the patio door at dawn without disarming first, and the siren follows.
What Arm Away Does
Arm Away arms every sensor on the system, including the interior motion detectors, and starts an exit delay so you have time to leave. When you return, opening a delay door starts the entry delay, and you disarm at the panel or in the app before it runs out. It is the mode for an empty house.
Motion sensors are the main difference in arm stay vs arm away. Someone who gets in without opening a protected door or window still has to cross the rooms a motion detector watches. That gives the system a second chance to detect someone inside, which is why the arm away vs arm stay choice matters most when the house is empty.
Auto Stay. Many Qolsys IQ panels include an Auto Stay setting. If you press Away but no delay door opens during the exit countdown, the panel assumes someone is still inside and arms Stay instead. That prevents a common mistake: arming Away, then remembering you are still in the kitchen.
Pets and Away. A dog or cat with the run of the house can trip a standard motion detector. Pet-immune motion sensors, placed and adjusted for your animal’s size, let you arm Away with a pet at home. Until yours are set up that way, Arm Stay is the safer choice when the pet stays behind.
What Arm Night Does
Arm Night arms your doors and windows plus the interior sensors your installer programs as night zones, often a motion detector covering the main floor or basement. Motion sensors in the bedrooms and upstairs hallway usually stay off, while every door and window, bedroom windows included, stays armed. Alarm.com describes night arming as similar to Stay with extra interior protection.
Night mode has a few requirements:
- A compatible panel. Alarm.com lists the IQ Panel 4 with firmware 4.4.0 or later, the IQ Panel 5, and the IQ Pro with firmware 4.2.1n or later, along with several DSC and Honeywell Vista panels.
- At least one night zone. If no sensor is programmed as a night zone, the panel arms Away when you choose Night. Every interior motion sensor then arms, so a trip downstairs for water sets off the alarm.
- The right steps in the app. In the Alarm.com app, select Night arming and then Stay.
In a two-story home, Night mode is a good fit for bedtime. The downstairs motion sensor watches the living areas while everyone upstairs can reach the bathroom without disarming.
Arm Stay vs Arm Away: Which Mode Fits Your Day?
Use Arm Away when the house is empty and Arm Stay when anyone is home and awake. Arm Night fits bedtime if your panel supports it and night zones are set up. When you are unsure, think about who is inside and where they will walk.
- Leaving for work. Everyone is out, so arm Away.
- Home for the evening. Arm Stay, so you can move around while the perimeter stays protected.
- Heading to bed. Arm Night if it is programmed. Otherwise, arm Stay.
- Dog walker at midday. Arm Away if your motion sensors are pet-immune, or Arm Stay if they are not, and give the walker a personal user code instead of sharing yours.
- Early run while others sleep. Disarm from the panel or app before opening the door, then re-arm Stay once you are out.
- Traveling. Arm Away, and make sure anyone checking on the house has a code and knows the entry delay.
The Alarm.com app adds a few arming options, according to Alarm.com’s support guide, that change how each mode behaves:
- No Entry Delay. Opening a delay door triggers the alarm right away. It suits nights when everyone is already home.
- Silent Arming. The panel skips its exit beeps, which helps when kids are asleep.
- Bypass Open Zones. The system arms even with a sensor open, and that sensor will not trigger an alarm.
Why Does My Alarm Say “Not Ready to Arm”?
“Not ready to arm” means at least one sensor is open or faulted, so the panel will not arm until you close it or bypass it. The usual cause is a door or window left open. A tampered sensor, a motion detector that just saw movement, or a panel left in programming mode can also block arming.
The wording depends on the panel. Older keypads display “Not Ready,” while touchscreen panels such as the Qolsys IQ series list the open sensors by name and offer to bypass them.
Common causes:
- A door, window, or garage entry left open or not fully latched
- A door that looks closed but has shifted away from its sensor magnet
- A motion detector that just picked up you, a pet, or a curtain moving near a vent
- A sensor tamper, often a cover knocked loose
- A sensor with a low battery or a lost connection, which some panels treat as a fault
How to Clear It
- Read the panel or app for the name of the open or faulted sensor.
- Close and latch that door or window, then confirm the panel shows it closed.
- If the sensor still reads open with the door shut, open and close it firmly. Doors that have settled, or swelled in a damp Puget Sound winter, often leave a gap between the sensor and its magnet.
- Give motion sensors a moment to clear and keep pets out of view while you arm.
- If nothing on the list is open, check for a tamper or low battery trouble and call for service.
Bypassing a Sensor Safely
Bypass tells the panel to ignore one sensor for the current arming cycle. It works when you want a window cracked for fresh air, but that opening has no protection until you disarm and arm again.
Some systems bypass for you. Qolsys panels offer an Auto Bypass setting for open sensors, and the Alarm.com app selects Force Bypass automatically, when it is available, as you arm an IQ Panel 4, IQ Panel 5, or IQ Pro remotely. The system arms, but the open sensor sits unprotected, so check the sensor list after you arm. A sensor that needs a bypass every day needs adjustment or replacement.
Ways to Arm: Panel, App, Key Fob, and Automation
You can arm Stay, Away, or Night from the touchscreen panel, the Alarm.com app, a key fob, or a schedule that arms for you. The panel is fastest at the door, the app works from anywhere, and automation covers the days you forget. Many households use two or three.
- Panel. Tap the arm icon, choose the mode, and leave through a delay door during the countdown.
- Alarm.com app. Check which sensors are open, then arm or disarm from anywhere. The everyday Alarm.com app tasks include remote arming and adding user codes.
- Key fob. Arm or disarm from the driveway without opening the app.
- Schedules. Set the system to arm at the same time each night.
Arming Reminders
Arming reminders send a push notification to your phone when the system has not been armed by a time you choose. They help on rushed mornings when nobody remembers to arm on the way out.
Geo-Services
Geo-Services uses your phone’s location to notice when you have left home with the system still disarmed, then sends a reminder so you can arm it from the app. It can also trigger other automations as you come and go, such as adjusting a connected thermostat or lights, depending on your devices and service plan.
Scenes and Smart Arming
Scenes group several actions under one tap, such as arming Stay, locking the doors, and turning off the lights at bedtime. Alarm.com Smart Arming goes a step further, arming at the bedtime you set and disarming at your wake-up time.
Arming Habits That Help Prevent False Alarms
Many false alarms start with the wrong arming mode or a missed disarm. Choosing the right mode, knowing your entry delay, and giving each person a code all cut down on accidental dispatches. That matters locally, since Pierce County, Lakewood, and Olympia all run alarm permit programs.
- Arm Stay, not Away, whenever anyone is home.
- Disarm before opening a door, even to grab a package.
- Make sure everyone in the house knows how long the entry delay lasts.
- Give sitters, cleaners, and dog walkers their own user codes, and delete them when the job ends.
- Keep your emergency contacts current so alarm and video monitoring operators can reach the right people.
- Check the local alarm ordinances hub for your city’s permit rules. In unincorporated Pierce County, the county requires an annual permit through its residential and commercial alarm program.
Protect the app side too. The FTC recommends securing internet-connected devices with strong, unique passwords and two-factor authentication where available, and the same advice applies to your Alarm.com login.
Set Up Your Arming Modes with All Systems Integrated Northwest
Arming modes work best when the programming fits your household: which door is the delay door, which motion sensors count as night zones, and whether Auto Stay is on. All Systems Integrated Northwest has been one of Puget Sound’s premier custom electronic integrators since 2004 and can walk you through each setting.
If you are planning a new system or upgrading an older one, start with home and business security systems built around Qolsys panels and Alarm.com. Business owners can pair arming schedules with Alarm.com smarter access control for doors and user permissions. For step-by-step videos, browse the security system tutorials, and read what local homeowners say on the customer testimonials page.
Consultations are by appointment. Contact All Systems Integrated Northwest or call 253-770-5570 to get help choosing the right arming setup for your home in Tacoma, Puyallup, Olympia, or anywhere in the South Sound.
Frequently Asked Questions
Does Arm Stay turn off motion sensors?
In the standard setup, yes. Arm Stay bypasses the interior motion detectors so you can move around inside, while your doors and windows stay armed. If you want some interior coverage at night, Arm Night on a compatible panel arms only the motion sensors programmed as night zones.
What is the difference between Arm Stay and Arm Night?
Both arm the doors and windows while you are home. Arm Stay leaves every interior motion sensor off, while Arm Night also arms the interior sensors your installer programmed as night zones, such as a downstairs motion detector. If no night zone exists, the panel arms Away instead.
Should I arm Stay or Away when my pet is home alone?
Arm Away gives the most coverage if your motion sensors are pet-immune and adjusted for your pet’s size. With standard motion sensors, a pet can trigger an alarm, so arm Stay until the sensors are updated. Your installer can confirm which type you have.
What does “Not ready to arm” mean?
It means a sensor is open or faulted, most often a door or window that is not fully closed. Find the sensor named on the panel or app, close it, and try again. If you want it left open, bypass it, knowing that opening has no protection until the next arming.
Can I arm my alarm system from my phone?
Yes. The Alarm.com app lets you arm Stay, Away, or Night (on compatible panels with night zones programmed), disarm, and check which sensors are open from anywhere. On Qolsys IQ Panel 4, IQ Panel 5, and IQ Pro systems, the app selects Force Bypass when it is available, so review open sensors after arming remotely.