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      Getting Started with Spark Devices

      Spark Devices let your alert system physically trigger external equipment — such as sirens, strobes, or locks — during an incident.

      Overview

      The Spark Device is a small relay controller used to trigger connected systems such as PA systems, strobes, sirens, or other powered devices. Each Spark device has four relays, which act like programmable switches — when activated, each relay sends power to whatever it’s wired to control.

      To access Spark Devices in the Portal:

      • Log into your 911Cellular Portal.

      • From the left-hand navigation, select Manage Devices → Manage Spark Devices.

      • Choose a device to open its configuration view.

      When you open a Spark Device, you’ll see four Relays (Action 1–4). Each card shows its Relay, Duration, Incident Type, and any Audio File attached. You have unlimited Actions per device. You can make as many Actions as you need.

      • Example A: One Incident Type (e.g., Lockdown) can trigger multiple relays—create one Action per relay.
      • Example B: The same relay can be reused across different Incident Types—create one Action per incident.


      Relay HAT Labeled

      Spark Device Hardware Specs

      Each Spark Device includes a 4-channel relay board. Each relay can control a connected circuit such as a siren, strobe, or lock.

      • Relay count: 4

      • Control signal: TTL level

      • Rated load: 10A at 250 VAC / 125 VAC / 30 VDC / 28 VDC

      • Rated current: 10A (Normally Open), 5A (Normally Closed)

      • Max switching voltage: 250 VAC or 30 VDC

      • Common connection points: COM (common), NO (normally open), and NC (normally closed).

      • Indicator lights: Each relay has a small LED that lights up when it is active.

      • Contact time: Under 10 ms

      Typical uses: Sirens, strobes, locks, amplifiers, or other accessories that need to activate during an incident.

      These specifications mean Spark Devices can safely trigger high-current systems like alarms or amplifiers, while still operating from a low-voltage control signal from the Portal.  When a relay activates, it completes the circuit and powers the connected system (like turning on a siren or unlocking a door). Each relay’s Duration setting determines how long that connection stays active.

      Next Steps

      Once you’re familiar with the Spark Device hardware, you can move on to configuration: