Home Security for Latchkey Kids: Arrival Alerts and Codes

Give your child their own named keypad code and turn on door-open alerts, so your phone tells you when the door opens and the named code lets you track who disarmed. SimpliSafe allows up to four named Custom PINs and Ring Alarm up to 256 access codes, and both send app notifications when a door sensor opens. Add a video doorbell so your child can see who is at the door without opening it.

Figures researched 2026-10-01; each source below carries its access date. Prices change; treat any price here as "as of" its date.

What an arrival alert setup looks like

The goal for a child who gets home before you is simple: you want to know they arrived, that the door is locked behind them, and that they can reach help if something goes wrong. A standard DIY alarm system covers most of that with three settings, using what SimpliSafe and Ring publish as of October 2026:

NeedSimpliSafeRing Alarm
A code just for your childUp to four Custom PINs, which you can name to track who disarmsUp to 256 access codes in total, each user with a unique four-digit code
An alert when the door opensSecret Alert setting sends a private notification per sensorOpen and closed notifications per contact sensor, by push or email
A code for an emergency under threatDuress PIN (police dispatch needs a monitoring plan with 24/7 dispatch)Duress Codes are among the code types supported
Locks on the same codePIN Pad on SimpliSafe's Smart Lock accepts PINsAccess codes work for the Alarm and any connected locks

The named code is the piece that turns an alarm into an arrival notice. When your child disarms with their own code, you know it was them and not a sibling or a visitor. Ring notes that a compatible subscription is required for digital arming and disarming and certain other in-app features, so check what your plan includes before relying on remote control from your phone.

A keypad on the door, or a keypad deadbolt, also means no house key to lose. Our comparison of keypad deadbolts and smart locks covers which to pick.

The door, the doorbell and the routine

Kids home alone face one question adults rarely think about: whether to open the door. A video doorbell lets them see and talk to whoever is outside without opening it, and lets you see the same view from work. Our video doorbell buying guide compares options with and without subscriptions.

The equipment only works if the routine is practiced. A simple script for the first weeks:

  1. Walk in, close and lock the door, then disarm with your own code.
  2. Re-arm in home mode once inside, so a door opening later sets off the siren.
  3. Text or call a parent to say you are in.
  4. Do not open the door for anyone not on the agreed list; talk through the doorbell instead.
  5. If the siren goes off by mistake, enter your code to cancel and answer the phone if the monitoring center calls.

Step 5 is worth practicing. A child who panics and leaves the house when the siren sounds can turn a mistake into a police dispatch. Our guide to what happens when an alarm goes off explains the sequence, and many cities charge for repeated false alarms, which our guide to false alarm fees covers.

Does a child at home need professional monitoring

Arrival alerts and codes work without a monitoring plan; they are app features. Professional monitoring adds someone who calls for help when the alarm, smoke detector or panic button fires and you cannot respond, which is the situation you are in while at work.

Whether that is worth paying for depends on how quickly you can act on an alert from where you are, and on what else the home needs. Smoke and carbon monoxide response is the strongest argument when a child is home alone, because a child may not know what to do. Published monitoring prices for the plans covered here, as of October 2026:

PlanPublished priceAbout per 30 daysContract
Ring Pro$19.99/mo or $199.99/yr$19.99Plan subscription
SimpliSafe Standard76 cents/day$22.80No contract, cancel any time
SimpliSafe Core$1.10/day$33.00No contract, cancel any time
ADT Self SetupFrom $24.99/mo$24.99One-month minimum

The 30-day column is our arithmetic on per-day rates. Ring says its professional monitoring covers intrusion, panic, duress and SOS emergency response, with the center calling you and your emergency contacts and requesting emergency services if help is needed or no one can be reached. Our guide to whether professional monitoring is worth it covers the general cost math, and we can fetch real quotes through a short questionnaire.

A panic button can help an older child summon help, but it also invites accidental presses. If you add one, mount it where a child can reach it on purpose and explain what it does. Our guide to panic buttons compares devices.

Frequently asked questions

How do I know when my child gets home?
Give your child their own keypad code and turn on door-open notifications in the app. SimpliSafe lets you name Custom PINs to track who disarms, and Ring lets you turn on notifications when a contact sensor opens. A text-on-arrival habit is a useful backup.
Should a child have the master code?
On SimpliSafe, the Master PIN is also required to access the keypad's menu and change system settings, while Custom PINs can disarm but cannot change settings. A separate code is usually the better fit for a child.
What age can a child use a home alarm system?
We did not find a published age requirement on the SimpliSafe and Ring code pages we checked. What matters is whether your child can enter a code calmly, cancel a false alarm and answer the monitoring center's call, so practice together before relying on it. State and local guidance on leaving children home alone is separate from any security product.
Do I need a subscription for arrival notifications?
It depends on the system. Ring says a compatible subscription is required for digital arming and disarming and certain other in-app features. Check your plan's feature list before relying on any specific notification.

Sources

  1. SimpliSafe: Master PIN disarms and is required to access the Keypad menu; Custom PINs disarm and cancel alarms but cannot change settings, can be named to track who is disarming, up to four; Duress PIN requests police dispatch with a monitoring plan that includes 24/7 emergency dispatch, entered on the Keypad or Smart Lock PIN Pad: https://support.simplisafe.com/articles/account-billing/setting-up-a-new-pin (accessed 2026-10-01)
  2. SimpliSafe Entry Sensor Secret Alert: private notification that does not trigger a system alarm, set per mode: https://support.simplisafe.com/articles/using-your-system/device-and-sensor-settings (accessed 2026-10-01)
  3. Ring Alarm: up to 256 access codes including Owner, Shared User, Guest User and Duress Codes; each user has a unique four-digit code; codes work for the Alarm and connected locks; compatible subscription required for digital arming/disarming and certain other in-app features: https://ring.com/support/articles/x7e9a/Creating-and-managing-Access-Codes-for-Alarm-Users (accessed 2026-10-01)
  4. Ring Alarm: notification when a contact sensor is open or closed, by push and/or email: https://ring.com/support/articles/in527/Managing-alerts-for-Ring-Alarm (accessed 2026-10-01)
  5. Ring Pro $19.99/mo or $199.99/yr; professional monitoring covers intrusion, panic, duress and SOS emergency response; center calls you and emergency contacts: https://ring.com/professional-monitoring (accessed 2026-10-01)
  6. SimpliSafe Standard Monitoring 76 cents/day, Core $1.10/day; no contract, cancel any time: https://simplisafe.com/features-alarm-monitoring (accessed 2026-10-01)
  7. ADT Self Setup monitoring starting at $24.99/mo; one month minimum: https://www.adt.com/own-vs-rent-security/self-setup (accessed 2026-10-01)