Professional security equipment manufacturers
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*The remote control address is not correct.
*Check that the batteries are installed correctly in the remote, making sure that the polarities of the batteries are not reversed.
*Make sure the batteries are fresh and are not out of power.
*Make sure the remote has not been tampered with.
*Make sure that the distance of remote control is not too far or the angle too deviated.
*Check around and make sure there are no fluorescent lamps in use.
*Remote Control is damaged or the front panel of DVR is damaged.
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