The AT-ESS02 Explosion-Proof Sounder Beacon is designed for industrial and hazardous area fire alarm applications where both audible and visual warning signals are required.
It is suitable for Zone 1 and Zone 2 explosive gas atmospheres of Group IIA, IIB and IIC, with temperature classes T1 to T6. It can also be used in Zone 21 and Zone 22 explosive dust atmospheres.
When an emergency such as a fire occurs, the fire alarm control panel sends an activation signal to the AT-ESS02. The device then emits sound and light alarm signals to warn personnel in the protected area.
This product is commonly used as part of an explosion-proof fire alarm system in oil, gas, chemical, petrochemical, storage, industrial plant and other hazardous locations.
Non-addressable explosion-proof audible and visual alarm device
Suitable for Zone 1, Zone 2, Zone 21 and Zone 22 hazardous areas
Explosion-proof mark: Ex db IIC T6 Gb / Ex tb IIIC T85°C Db
Designed for explosive gas atmospheres of Group IIA, IIB and IIC
Suitable for explosive dust atmospheres
DC 24V operating voltage
Sound pressure level: 75 dB to 95 dB
Fire alarm tone output
Multiple ultra-bright LEDs for clear visual warning
Low power consumption and long service life LED indicator
Stainless steel wire mesh flameproof sound transmission component
Compatible with fire alarm control panels from different manufacturers
Can be used with manual call points to form a simple audible and visual alarm system
| Item | Specification |
|---|---|
| Model | AT-ESS02 |
| Product Type | Explosion-Proof Sound and Light Alarm / Sounder Beacon |
| System Type | Non-addressable |
| Explosion-Proof Mark | Ex db IIC T6 Gb / Ex tb IIIC T85°C Db |
| Applicable Gas Zone | Zone 1, Zone 2 |
| Applicable Dust Zone | Zone 21, Zone 22 |
| Gas Group | Group IIA, IIB, IIC |
| Temperature Class | T1 to T6 |
| Operating Voltage | DC 24V |
| Alarm Current | ≤ 250 mA |
| Sound Pressure Level | 75 dB ~ 95 dB |
| Sound Pattern | Fire Alarm Tone |
| Visual Indicator | Multiple ultra-bright LEDs |
| Ingress Protection | IP65 or IP54 |
| Ambient Temperature | -20°C ~ +50°C |
| Relative Humidity | ≤ 95%, non-condensing |
| Atmospheric Pressure | 80 kPa ~ 110 kPa |
| Conduit Entries | M25 × 1.5-6H / G3/4" |
| Weight | 1.5 kg |
| Approx. Dimensions | 156 mm × 155 mm × 90 mm, based on manual dimension drawing |
The AT-ESS02 operates with DC 24V power input.
For wiring, open the housing cover by loosening the screws, then connect the DC 24V power cables to the terminal block. The manual states that polarity is not sensitive.
The device is typically activated by a fire alarm control panel or manual call point. When the alarm signal is received, it produces audible and visual alarm output.
No relay output is specified in the uploaded manual.
Important installation note: Do not disassemble the unit while it is powered on in a hazardous area. During installation, the flameproof joint surfaces must not be damaged and must be kept clean.
Oil and gas facilities
Petrochemical plants
Chemical processing areas
Fuel storage areas
Hazardous material warehouses
Explosion-proof fire alarm systems
Industrial plants with explosive gas atmosphere
Dust hazardous areas
Zone 1 and Zone 2 gas hazardous locations
Zone 21 and Zone 22 dust hazardous locations
Fire alarm warning systems for hazardous areas
Manual call point and sounder beacon alarm systems
