描述
要有必需的后备手段:重要的保护和联锁,出了有通讯连接外,还必须具有硬接线方式;对重要的调节设备,除了在操作员站上有软手操外,还必须有后备手操,以便在DCS控制系统控制器或I/O模件发生故障时,仍然可以对重要设备进行及时干预。
SYMBOL MOTOROLA LS3408-ER20005R SCANNER,INDUSTRIAL,EXT.
SYMBOL MOTOROLA LS7808-SR20009SCR LS7808 SCNR: PLASTIC/
Motorola Symbol Ds6878-sr Handheld Bar Code Reader –
FREE shipping Generous 30-day return policy
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Symbol Motorola MC7004 w/1D Scan, Numeric Key, Cellular
* MC70 * MC7004-PUCDJRHA70R – Includes Single Cradle
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SYMBOL MOTOROLA MC7004 PUCDCQHA80R BARCODE GSM CELLULAR
Complete kit includes battery,stylus,cables, & charger.
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