Ordinary Video Door phones provide incomplete protection. Crystal VDP with Alarm Function interfaces with a range of Wired Sensors for intrusion & panic detection. In case of an alarm Crystal VDP will activate panic ringing external hooter trigger panic to connected Crystal guard security system, plus a host of other advanced functionalities.
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Ordinary Video Door phones provide incomplete protection. Crystal VDP with Alarm Function interfaces with a range of Wired Sensors for intrusion & panic detection. In case of an alarm Crystal VDP will activate panic ringing external hooter trigger panic to connected Crystal guard security system, plus a host of other advanced functionalities.
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