第 10 页
eight external alarm interface
(1) alarm input 1,2,3,4 (2) ground (3) RS232 (4) RS485 (5) alarm input 5,6,7,8
(6) ground (7) alarm output
sixteen external alarm interface
①⑥⑧alarm input ②⑦ground ③alarm output ⑤RS485 ④RS232
485communciate interface which is connected with the
recording control equipments such as the decoder
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