Beijing RuiZhitianhong technology Co.Ltd.
ADD.：A308 jiahua building, 9 Shangdi 3rd Street, Haidian District, Beijing. P.C.：100085.
Dell：+86-10-62970368/82923063 Fax：+86-10-82920078 URL：www.richnc.com.cn 15
b) NPN (NO) home switch wiring
c) PNP(NO) home switch wiring（Y、Zsame as X）
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