▇ CON&TROL--Building Intercom System
4、Attention：
1.Please make sure that input and output wire is correct in order to avoid damage device,before use.
2.After connecting electricity,please make sure that the red LED indicator is on,if not,please check the wiring connecting
is wrong.
3.when no electricity,product will provide power for battery automatically.As battery is used for some time,it is normal for
relay jumping inside product .
4. Do not install in fiercely sun, high temperature, rain and the place with too much dust, when installation, don't block
both sides of the file heat-sink window, and try to install in ventilated place.
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