Why is my Arlo Pro 5S alarm not working?

Common causes include software issues, connectivity problems, and settings misconfigurations. Follow our guide to fix your Arlo Pro 5S.

How do I fix Arlo Pro 5S alarm not working?

Start by restarting your device, checking connections, and updating firmware. Our step-by-step guide provides detailed instructions.

When should I call support for my Arlo Pro 5S?

If troubleshooting doesn't resolve the issue, or you encounter persistent errors, contact a certified Arlo technician.

Arlo Pro 5S Alarm Not Working

If your Arlo Pro 5S alarm not working has left your home security compromised, you're not alone. Many users experience issues with their camera's siren failing to trigger, sounding too quiet, or not responding to app commands. This comprehensive troubleshooting guide walks you through proven solutions to restore your alarm functionality and keep your property protected. Whether the problem stems from software settings, power issues, or connectivity problems, these steps will help you diagnose and fix the Arlo Pro 5S alarm not working efficiently.

Check Alarm Settings and Permissions

Before assuming hardware failure, verify that your alarm is properly configured in the Arlo Secure app. Incorrect settings are the most common cause of alarm malfunctions.

Open the Arlo Secure App: Launch the app and select your Pro 5S camera. Tap the gear icon for Device Settings, then navigate to "Audio Settings" or "Siren" to confirm the alarm feature is enabled.

Verify Alarm Volume and Mode: Ensure the siren volume is set above 50% and not muted. Check that your camera is in the correct mode—armed rather than disarmed—and that alarm triggers are assigned to motion or audio detection as desired.

Test the Manual Alarm Trigger: From the live view screen, tap the alarm icon to manually activate the siren. If it sounds, the hardware is functional and the issue lies with automatic trigger settings or rules.

Resolve Power and Connectivity Problems

A weak battery or unstable connection can prevent the alarm from activating even when settings are correct. Address these foundational issues next.

Check Battery Level: Low power disables power-intensive features like the siren. Go to Device Settings > Battery and charge your Pro 5S if below 20%. Use the original Arlo charging cable for optimal performance.

Improve Wi-Fi Signal Strength: Weak connectivity interrupts command delivery. Check your camera's signal strength in Device Settings. If poor, move your router closer, eliminate interference from thick walls or metal objects, or add a Wi-Fi extender.

Restart Camera and Sync Base: Power cycle your Pro 5S by removing the battery for 10 seconds, then reinserting. If using a SmartHub or base station, unplug it for 30 seconds and reconnect. This clears temporary software glitches affecting alarm functionality.

Warning: Do not factory reset your camera unless all other troubleshooting fails. A reset erases all settings, recordings, and paired devices, requiring complete reconfiguration of your security system.

Update Firmware and Reinstall the App

Outdated software frequently causes feature malfunctions. Keeping your firmware and app current ensures compatibility and bug fixes.

Install Pending Firmware Updates: In Device Settings, look for a firmware update notification. If available, connect your camera to power and initiate the update. Keep the app open until completion—interruptions can corrupt the installation.

Update or Reinstall the Arlo Secure App: Visit your device's app store to ensure you're running the latest version. If problems persist, uninstall and reinstall the app, then log back into your Arlo account and reconfigure alarm settings.

Frequently Asked Questions

Why does my Arlo Pro 5S alarm sound quiet or distorted?

A quiet or distorted alarm typically indicates water damage to the speaker, physical obstruction, or a failing speaker component. Check for debris blocking the speaker grille, ensure the camera hasn't been submerged, and test at maximum volume. If distortion continues across multiple tests, the speaker hardware likely needs replacement.

Can I set the alarm to trigger automatically when I'm away from home?

Yes. Enable Geofencing in your Arlo Secure app under Mode settings. This automatically arms your camera and activates alarm triggers when your phone leaves a designated area. You can also create custom modes with specific alarm behaviors for different times or locations.

Does the Arlo Pro 5S alarm work without a subscription?

Basic manual alarm activation works without a subscription. However, advanced features like smart notifications, cloud recording tied to alarm events, and automated emergency response require an Arlo Secure subscription. Verify your plan status if automated triggers aren't functioning.

Still Need Help With Your Arlo Device?

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