来源：http://www.dzzhongtebao.com 点击次数： 发布时间：2018-01-17
The electronic alarm is not only used in the security company, with updated technology, with the progress of science and technology, the application of electronic alarm system more and more in more industries: system failure, safety precautions, transportation, medical assistance, emergency relief, sensor detection and other areas, it is closely related with social production.
In order to help customers avoid misunderstandings and select the real and cheap alarm, Dezhou security company suggests that customers should pay attention to the following points when purchasing the burglar alarm.
1, whether is the manufacturer's regular authorized dealer, the regular regular channel can often supply more favorable price, high quality service and high quality products.
2, product package: is there a name, address, trademark and contact way of the production plant? If there is no or lack, I will ask you to see if it is a three no product or a fake product, because the regular packing product must have the above contents.
3, alarm host, infrared detector, the door is through the national compulsory 3C certification, 3C certification for security products is necessary after the authentication, but also guarantee the quality of products of the primary factor.
4. Whether the alarm host transformer is built in, the national 3C rule host transformer is necessary to be built, and the external 3C can never be detected by the state.
5, alarm signal is built-in? The external alarm is relatively low safety alarm.
7. Is the infrared detector capable of resisting strong light? To see if this hardware is available, this component can avoid strong light misinformation.
8. Does infrared detector have its own temperature compensation function? To see if this hardware is available, this element can avoid misinformation caused by temperature changes.
9. Does the infrared detector circuit board have a frequency stabilizing element? This element can avoid misinformation caused by signals such as magnetic field, pulse, same frequency, high frequency, sound and so on.
10. Are there any low power indication functions and related components? This function can avoid misstatements caused by voltage instability or low electricity.
11. Is it possible to use the micro power planning? Is there a power saving form and a standard form? This function can be used to use the battery.
12, does the infrared detector supply 9-12V DC input interface, which has two layers of power supply mode, so that the detector can operate intermittently and reduce the trouble caused by replacing batteries.
13, the type of battery used by infrared detectors? In general, the number seven battery is simply replaced, the type selection is large, the bulk battery is not very convenient, and the electricity is small.
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