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The NVR alarm output port is constant opening type.
eight external alarm interface
(1) alarm input 1,2,3,4
(6) ground
(7) alarm output
sixteen external alarm interface
①⑥⑧alarm input
Parameter
G
R,T
A,B
(2) ground
(3) RS232
③alarm output
②⑦ground
grounding
RS232 port
485communciate interface which is connected with the
recording control equipments such as the decoder
14 / 91
(4) RS485
(5) alarm input 5,6,7,8
⑤RS485
meaning
④RS232
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