Digital flashing alarm

1、 Overview of Digital Flash Alarm
The TX-XSG08 series digital flash alarm replaces the traditional leading hardware based alarm function circuit, greatly reducing the number of components and improving reliability. The input circuit adopts a photoelectric isolator, which completely isolates the CPU and external circuit. The multiple inputs are all normally open passive input methods. The alarm adopts an internal buzzer sound and a flashing surface indicator, as well as a passive contact output from the rear terminal, to achieve a three state alarm. This series of instruments adopts imported high-quality components, with a reasonable structural design, superior performance, reliable operation, long service life, and easy maintenance, and is deeply trusted by a large number of users.
2、 Technical specifications of digital flash alarm
1. Power supply voltage: AC220V ± 10% 50HZ or DC24V ± 10%
2. Environmental temperature: -10 ℃ to+45 ℃
3. Relative humidity: ≤ 85%
4. Input method: Passive contact, no additional input power allowed.
5. Relay contact output: AC240V 3A; DC28V 5A
6. The circuit resistance is less than or equal to 3O ohms.
7. Power consumption: about 5W (eight circuits simultaneously in alarm state, excluding power of electric bell or buzzer).
8. Instrument weight: approximately 0.5Kg
9. Capable of displaying time
10. Hole size: 152 × 76mm
11. Dimensions: 160 × 80 × 11Omm
3、 Working principle of digital flash alarm
Multiple input signals are converted into high and low levels by a photoelectric isolator and enter the microcontroller. The microcontroller restores the sequence of high and low levels to corresponding state variables one by one, while emitting a three state alarm of sound and light contacts. It also has panel silencing and lamp testing functions.