Simplex TrueAlert ES 59AO Addressable Fire Horn

Product Description
The Simplex TrueAlert ES 59AO is an addressable fire alarm horn operating on the Signaling Line Circuit (SLC) with IDNAC (Intelligent Device NAC) technology. The device supports both horn and strobe operation on the same wiring loop, providing flexible installation and reduced costs.

Key Features

• Individually Addressable: Each device has its own unique address, monitored and controlled directly from the Simplex fire alarm control panel (FACP) via IDNAC SLC.

• Stable Power Supply: Operates on regulated 29 VDC, reducing current consumption even on battery backup.

• Flexible Wiring: Supports “T-Tap” (Class B) connections for reduced wiring and installation costs (Class A requires in/out wiring).

• Self-Test Mode: Automatically generates a test signal and reports device status back to the panel.

• Selectable Operation Modes (programmable via FACP):

  • Temporal Code 3

  • Temporal Code 4

  • March Time (20, 60, or 120 bpm)

  • Continuous

• Dual Sound Levels (High/Low): Approximately 6 dBA difference, selectable at device or from the panel.

• Magnet Test: Quick field test using a magnet to flash the LED and sound a short horn blast, confirming device address.

• Certifications: UL 464, ULC S525, CSFM, FM Approved.

TrueAlert ES Advantages

• High Reliability: Monitors down to individual electronic circuits of each device.

• Power Efficiency: Low current draw enables longer wiring runs (2–3 times more than conventional devices) and supports more devices per SLC.

• Fast Installation: “T-Tap” wiring support reduces cable, conduit, and labor costs.

• Easy Testing & Maintenance: Supports Self-Test, Magnet Test, and direct device reporting to the panel.

Technical Specifications

• Operating Voltage: 23 – 29.5 VDC (from IDNAC SLC).

• Operating Current: Max. 27 mA @ 23 VDC.

• Sound Output @10 ft (3 m):

  • Steady/High: ~87 dBA

  • Steady/Low: ~85 dBA

  • Coded: ~81–83 dBA

• Sound Frequency: 2400 – 3700 Hz, swept and modulated at 120 Hz.

• Humidity: 10% – 93% non-condensing.

• Wiring Distance:

  • Max. Class B with T-Tap: 3048 m

  • Max. to individual device: 1219 m

• SLC Capacity: 127 addresses, 139 unit loads.

Models & Installation Options