Sending Alerts

Learn how to broadcast emergency notifications to your alert nodes.

Quick Alert Types

AlertHz provides three pre-configured alert types for common emergencies:

🩹 First Aid

Medical emergency alert - notifies staff of a health-related incident requiring immediate attention.

🔥 Fire

Fire emergency alert - activates fire alarm protocols and evacuation procedures.

🎤 Voice

Custom voice announcement - broadcast general messages or specific instructions.

Broadcasting an Alert

Step 1: Choose Alert Type

Click one of the emergency alert buttons on your dashboard: - First Aid - Fire - Voice

Step 2: Select Target Nodes

A modal will open showing all available nodes.

Options: - Check individual nodes to target specific locations - Use Select All Online Nodes to broadcast everywhere - Offline nodes are automatically excluded

Step 3: Review Selection

The bottom of the modal shows your selection count:

5 nodes selected

Step 4: Send Alert

Click the Send Alert button to broadcast immediately.

Alert Broadcast Behavior

When you send an alert: 1. AlertHz sends HTTP requests to all selected nodes 2. Each node receives the alert type and timestamp 3. Devices activate their alert protocols (sirens, displays, etc.) 4. Dashboard shows confirmation of successful broadcast

Best Practices

Testing Alerts

• Test your system regularly (weekly recommended)
• Announce tests in advance to avoid confusion
• Verify all nodes receive and display alerts correctly

Emergency Protocols

• Train staff on which alert type to use for each emergency
• Document evacuation procedures for each alert type
• Maintain updated contact lists for emergency responders

Node Selection

• For building-wide emergencies: Select all nodes in that building
• For floor-specific events: Use filters to select only that floor
• For isolated incidents: Target only nearby nodes

Alert Response Times

Typical alert delivery: - Local network: < 1 second - Remote devices: 1-3 seconds - Offline nodes: Skipped automatically

Limitations

• Alerts are sent immediately (no scheduling)
• No message customization for pre-configured alert types
• Offline nodes will not receive alerts
• No alert history retention (future feature)

Emergency Contacts

For system failures during emergencies: - Technical Support: support@alerthz.ca - Emergency Line: (555) 123-4567

Next Steps

• Troubleshooting common issues →

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