1、 Overview

The THGXXW1224 photoelectric smoke detector is a switch output type fire pre alarm suitable for home, store, dance hall, warehouse, computer room and other places, especially suitable for widespread use in computer room monitoring places. This alarm has the characteristics of wide power supply range, high inspiration, stable and reliable, low power consumption, beautiful and durable, and easy to use.

2、 Performance

Power supply: DC9V~DC30V

Current: Static current ≤ 2mA Alarm current ≤ 50mA

Working temperature: -40 ℃~+80 ℃

Relative humidity: ≤ 95% RH (25 ℃± 2 ℃)

Output form: Sound and light alarm and passive contact alarm output

Alarm sound: ≥ 60db (3 meters)

Surge (impact) immunity: Power input: line to line ≥ 2KV

3、 Function

Power on reminder:After the alarm is powered on, the indicator light flashes once and the buzzer sounds once to indicate that the power has been turned on.

Self inspection:When manually pressing the test button, there is an audible and visual alarm, but the relay does not operate. After manual detection is completed, there is no need for remote power-off reset. When the self check test button is released, the sound and light alarm will automatically resume, and there will be no external control output.

Smoke alarm:Under normal circumstances, the alarm indicator light will automatically flash every 40 seconds. The alarm automatically detects the smoke concentration in the surrounding environment every certain time (about 1 second). When the smoke concentration approaches the alarm threshold, the alarm starts intelligent calculation. If the calculation result reaches or exceeds the alarm threshold, the alarm will start sound and light alarm, and the relay will be activated. When the smoke concentration in the surrounding environment drops below the alarm threshold, the alarm will automatically resume normal operation.

Output:Passive relay contact output; Contact capacity 30V/1A or 125V/0.5A.

When leaving the factory, the contact is set to normally open mode by default (it can be requested to be set to normally closed mode when leaving the factory)