Introduction of Alarm
An alarm is a device that sends an alarm signal. It is used to issue signals for prediction, alarm and alarm cancellation. Air alarm refers to the alarm system set up to prevent enemy air attack during the war. It is an important part of urban air engineering and a warning to remind people of air when the city is threatened by air raid.
According to the principle of phonation:
1. Electric alarm: convert electric energy into mechanical energy, and then convert mechanical energy into sound energy.
2. Electroacoustic alarm: convert the small audio signal into sound energy after low-frequency power amplification. That is, electronic energy is converted into sound energy.
3. Pneumatic alarm: convert electric energy into mechanical energy, and then convert mechanical energy into pneumatic energy. From air energy to sound energy.
According to different setting conditions:
1. Fixed alarm: an alarm installed in a fixed place.
2. Mobile alarm; An alarm installed in a motor vehicle or in other forms and used in motion.
FAQ
Q1: What does your company do for product testing?
A1:We have SPI+AOI and X-Ray and ICT as well as FCT testing.
Q2: Are you a factory or just a trading company?
A2：We are a factory. If you have time, we will warmly welcome you to visit the factory.
Hot Tags: pcb assembly for alarm, China, manufacturers, factory, customized, smart home pcba main board smt ems, ISO14001 Smt Pcb Assembly, ISO 14001 smt pcb assembly, Controller Printed Circuit Board Pcb Assembly Pcba, Pcb Assembly And Design, PCB Assembly Blood Circulation Machine
