ATJ-EN (SCI)

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ATJ-EN (SCI)

Hochiki addressable heat detector, ESP protocol, multi-thresholds with two programmable flashing LEDs, different programmable temperature classes: A1, B & C, certified EN54-5 & 17 by LPCB and VDS

Designation

Hochiki addressable heat detector – model ATJ-EN (SCI)

Protocol: ESP
Type: Programmable multi-threshold
LED: 2 programmable flashing LEDs
Temperature classes: Programmable A1, B & C
Integrated function: Short-circuit isolator (SCI / ICC)
Certifications: EN54-5 & EN54-17, LPCB, VDS

1. General Description

The ATJ-EN (SCI) is a Hochiki addressable heat detector designed for reliable fire detection in diverse environments.

It supports multiple temperature classes (A1, B, C) and programmable triggering thresholds, allowing adaptation to the specific requirements of each installation.

The detector features two programmable flashing LEDs, providing immediate visual feedback on status: alarm or fault.

Thanks to its integrated short-circuit isolator (SCI), the detection loop is protected in the event of a short circuit, ensuring system continuity and safety.

It is certified EN54-5 and EN54-17 and approved by LPCB and VDS, guaranteeing compliance with international standards.

2. Key Features

Type: Addressable multi-threshold heat detector
Protocol: Hochiki ESP
Programmable thresholds: Multiple levels for environmental adaptation
LED: 2 programmable flashing LEDs
Temperature classes: A1, B & C (programmable)
SCI function: Integrated short-circuit protection
Material: Robust, impact-resistant polycarbonate

3. Technical Specifications

Operating voltage: According to ESP protocol (17–41 VDC)
Operating temperature: -10°C to +55°C
Diameter: ≈ 100 mm
Height: ≈ 45–50 mm
Weight: ≈ 120–150 g
Loop compatibility: Compatible with Hochiki ESP addressable lines
SCI function: Automatic isolation in case of a short circuit

4. Specific Features

Detection adapted to different environments via programmable thresholds
Two flashing LEDs for immediate visual feedback on status or alarm
Integrated short-circuit isolator for loop continuity
Simple and quick installation
Compatible with most Hochiki ESP addressable systems

5. Applications

Commercial and tertiary buildings
Hospitals and healthcare facilities
Industrial sites exposed to heat or temperature variations
Areas requiring sensitive detection and enhanced safety with addressable loop monitoring