The automatic fire alarm and extinguishing device is an active and intelligent fire extinguishing measure for early detection of fires and timely adoption of effective measures to control and extinguish fires. Relying on the rapid development of modern power electronics technology, the automatic fire alarm and extinguishing system comprehensively utilizes modern high-tech sensor technology and wireless communication network technology to detect, alarm, and extinguish fires in protected areas.
The automatic fire alarm and extinguishing device can send out wireless transmission signals, so there is no need to rewire during installation and there is no wiring trouble, thus achieving the goal of simple installation and maintenance. This device can collect two types of simulated quantities, namely thermal radiation and smoke, in real time, and compare and judge various environmental data, so as to accurately and reliably predict and detect fires, avoiding false alarms and omissions. In the event of a fire, it is possible to determine whether it is necessary to start the fire extinguishing unit based on whether the detected heat radiation and smoke amount exceed the limit value, and quickly extinguish the low-voltage distribution cabinet or box where it is located, effectively preventing the hazards caused by the spread of the fire.
Compared with traditional automatic fire alarm systems, automatic fire alarm and extinguishing devices have the characteristics of simple construction, easy installation, convenient networking, and time and labor saving in debugging. Moreover, they have small changes to the site layout, facilitate integration with the original wireless system, and are easy to expand. The system design is simple, fully addressable, and convenient for networked design. They can be widely used in low-voltage distribution cabinets and boxes in hospitals, various industries, airports, comprehensive buildings, and other areas.

Monitor the smoke concentration in the power distribution cabinet in real time, and issue an alert if the indicator exceeds the limit
Monitor the thermal radiation amount in the distribution cabinet in real time, and issue an alert if the index exceeds the limit
After an electrical fire occurs, the fire source can be extinguished in a timely manner and an alarm can be sent
Can transmit early warning and alarm information prompts through SMS and wireless means

Main unit DMS-WFE-ZD
Monitoring control unit DMS-WFE-KD
Fire extinguishing unit DMS-WFE-MD

Receive the fire warning information or alarm information sent by the monitoring and control unit through wireless means, and issue a prompt. The prompt methods include the following 4 types：
1. It can emit a sound and display the fault location.
2. Send early warning and alarm information to the background through wireless means;
3. It can preset emergency contacts and provide SMS alarm methods;
4. The communication interface is reserved for this machine to ensure reliable connection between the background and the host;

Real-time collection of smoke concentration and thermal radiation values in the cabinet, with the operation logic as follows:
1. When the limit value reaches the warning value, it will wirelessly transmit the warning information to the system host.
When the limit value reaches the alarm value, the control fire extinguishing unit drives the fire extinguishing unit to act and wirelessly transmits the alarm information to the system host.

During operation, the aerosol vaporizes and the generated gas quickly fills the entire power distribution cabinet, reducing the oxygen content in the cabinet. At the same time, the chain reaction during the combustion process can be interrupted, reducing the combustion speed, and achieving the purpose of extinguishing fire.