Support >> Technical exchange >> Details

The difference between wired and wireless alarm siren

Add Date:2013/6/28 Hits:4262 Font Size:S M L Back

Active alarm built-in power amplifier circuit, the need for external power supply to work properly. Active alarm is usually marked built-in amplifier output power (which requires an external power supply driving power), input impedance and input signal level is equal parameters.

In general, the wiring alarm host access active alarm is: will host DC12V power output interface (or external DC), normally open alarm output interface with active alarm in series to form a loop. DC12V power output (or external DC) can give warning of its internal power amplifier provides the necessary energy source, normally open alarm output is used to control the circuit on and off, in order to achieve synchronization and alarm siren alarm or eliminate Police. Specific wiring method as follows :( attention to the positive and negative can not be reversed)

Internal passive alarm no power amplifier circuit, just a piece of piezoelectric ceramic buzzer, it has to be connected to an audio signal output interface also has a certain drive capability. Generally marked impedance passive alarm, power, frequency range and other parameters.

Passive alarm host access needs built-in power amplifier circuit, directly provide sufficient power output and audio output through the alarm output interface. To drive a passive alarm sound, note the positive and negative alarm can not be reversed.

When the host linkage output interface is not built-in power amplifier circuit, the output power is too small (for example, normally open and normally closed output terminal), you can not drive a passive alarm, but only with the active alarm.

Up: What is the rush line function

 About DYGSM   SiteMap   Language
Dongguan DYGSM Co., Ltd. is a professional developer and manufacturer of Security Alarm products and related accesories more than 10 years in China. The factory covers 3,000 Square meters, and holds over 100 employees, it has s...

Dongguan DYGSM Co., Ltd.
Tel:86-769-82553706/82553753 Fax:86-769-82553753
工信部备:粤ICP备18118801号-2 公安网备:44030902001182  
  About us
About us Contact us
Technical exchange Questions and answers Vocation news Application scheme