1, how to choose the number of burglar alarm host
On this issue, many of my friends have misunderstood: It is wrong to think that there are several detectors that use several alarm hosts. The several ways of the control panel actually refer to several zones: for example, we use the living room as a zone, doors and windows as a zone, the kitchen as a zone, the study as a zone, and the bedroom as a zone, and It is not necessary to have a 5-way alarm host. We can compile the two detectors in the study and the bedroom into the same zone code. In this way, the 4-way alarm host can also be used.
In fact, we have all the detectors of the above five zones combined into one zone code, and the one-way alarm host can also be used, but it is impossible to distinguish the specific location of the alarm when the alarm occurs.
We need to remind everyone that when purchasing a host, you must first determine the amount of space and area to be guarded, and then determine the zone and model of the host. Generally, you should leave 2-4 channels of space when you purchase the host, in order to increase the defense zone and detection equipment in the future.
2, the host should pay attention to what problems
The host should be installed away from large metal objects, TVs, computers, etc., otherwise the transmission or reception distance will be shortened because the signal is interfered; the host should be installed close to the detector as much as possible; under the premise of concealment, the antenna should be pulled out as much as possible. Raise; pay attention to the phone incoming and outgoing positions are incorrectly inserted.
3, the maintenance and maintenance of the host
In order to ensure the reliability of the system, it is necessary to maintain a "walk test" at least once a month. After using the main unit for a period of time, the main unit may be dusty and greasy. It needs to be cleaned with a soft cotton cloth or sponge and then wiped dry. However, it is strictly forbidden to wipe the outer casing with any abrasive or organic solvent, such as kerosene, acetone, super glue, etc. during the cleaning process, so as not to damage the appearance of the fuselage and the transparency of the top window.
4, the host's power supply mode
The main unit power supply consists of an external rechargeable AC power adapter and a built-in rechargeable battery. After the battery is under voltage, the power to the host will be turned off and the automatic protection state will be entered. Once the system power is restored, the host immediately starts to enter the working state and charges the backup battery.
5. What is the 485 bus system?
RS-485 is a serial data interface standard developed and released by the Electronics Industry Association. In 1983, the RS-485 standard was developed on the basis of RS-422, which adds multi-point and two-way communication capabilities, allowing multiple transmitters to be connected. On the same bus, the driver's drive capability and conflict protection feature are added, and the bus common mode range is extended, which is named TIA/EIA-485-A standard.
6. What are the technical requirements for wiring the home anti-theft monitoring system?
(1) Understand the overall structure of the wiring system, do not wear the wrong route;
(2) It is possible to clearly distinguish the various cables to be laid, and do not use the wrong cables;
(3) Familiar with the pipeline through which the cable passes;
(4) Have rich experience in threading and know how to prevent typical problems affecting threading quality and progress;
(5) Understand and bear in mind our special requirements for cable laying in cabling systems;
(6) Clear thinking, grouping information points, laying them one by one, not wearing them, not missing them. Each group should not exceed 20 information points. Otherwise, the amount of cables to be placed at the same time is large. It is easy to cause cable damage and easy to entangle and knot, which greatly affects the progress.
(7) faithfully and rigorously label and record the length scale;
(8) Strictly organize the test and measure the on/off with a multimeter cable.
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