B+B SmartWorx_研华BB-ZZ-8DI-DC
8数字输入扩展模块 - for Zlinx Standard IO Base，8 digital inputs, (pull-up resistors)，0-48VDC (NPN, sinking)，0.4W (Class 2 power derived from base modules)
BB-ZZ-8DI-DC
Snap-on expansion module - for Zlinx Standard IO base module
8 digital inputs, (pull-up resistors)
0-48VDC (NPN, sinking)
0.4W (Class 2 power derived from base modules)
UL/cUL, C1/D2
嵌入式扩展模块-用于Zlinx Standard IO基本模块8个数字输入，（上拉电阻）
0-48VDC（NPN，下沉）
0.4W（2级功率来自基本模块）
UL / cUL，C1 / D2
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