四方输出表决电路对于所有的关键信道给出多重冗余，保证了安全和最大的利用率。双通道输出模件给出刚刚足够的冗余度以保证安全运行。双重化模件更适合于低成本比最大利用率更重要的关键安全场合。

每种数字输出模件均可对每点进行专门的输出表决器诊断（OVD）。一般而言，在OVD执行过程中每一个点的状态被逐点保存在输出驱动器上。在模件上的反馈控制回路允许每个微处理器读出此点的输出值，以决定在输出电路内是否存在有潜在的故障。（对于那些任何跃变时间宽度都不能容忍的现场装置，在AC和DC电压数字输出模件上的OVD都可以被禁止）。

监督型数字输出模件同时具有电压的和电流的反馈，具备在励磁和非励磁的工作状态下故障的完全覆盖。此外，监督型数字输出模件还能对回路进行连续校核，验证是否有现场负载存在。现场负载丢失或线路短路时，在模件上有信号指示。

DC电压数数字输出模件是专门设计来控制那些现场设备可能长期地保持于一种状态。DC电压数字输出模件的OVD诊断能确保完全的故障覆盖率，即使各点的被命令状态从不改变。在这种模件上，一般只在OVD执行期间输出信号发生跃变，但被保证低于2毫秒（标准的是500微秒），并且对绝大多数现场设备是没有影响的。

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 Allen Bradley Expansion Unit SLC 150 1745-E157 A
 
 1745-E107 Allen Bradley Analog Expansion 1745E107 N814
 
 1745-E107 Allen Bradley 1745E107 Analog Expansion N813
 
 Allen Bradley Memory Module 1745-M1 SerB
 
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 Allen Bradley 1745-E101/1745E101
  
 Allen Bradley AB 1745 E154 SLC 150 Expansion Module
 
 Allen Bradley 1745 High Speed Input Module 1745-E155
 
 Allen Bradley PLC SLC-100/150 1745-PCC cable (12ft)
 
 ALLEN BRADLEY SLC 100 RELAY OUTPUT EXPANSION 1745-E105
 
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 ALLEN BRADLEY 1745-E101 SERIES B SLC100 EXPANSION UNIT
  
 Allen Bradley Analog Input Exp. Unit 1745-E106/A USED!
 
 Allen Bradley 1745-E105 Expansion AB SLC100 1745E105
 
1745-E106 Allen Bradley Expansion Unit 1745E106 N801
 
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 Allen Bradley 1745-E156A PLC
 
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 ALLEN-BRADLEY 1745-E153  2150ES  SLC 150 EXPANSION UNIT
 
 Allen Bradley AB1745 Expansion Unit SLC 150 1745-E151 *
 
 ALLEN-BRADLEY 1745-E153 SLC 150 EXPANSION UNIT
 
 ALLEN BRADLEY 1745-E151 SLC 150 EXPANSION UNIT
 
 Allen Bradley AB Expansion Controller 1745-E103 SLC 100
 
 New Allen-Bradley 1745-R3 SLC 100 Exp. Unit Relay Board
 
 New Allen-Bradley 1745-R3 SLC 100 Exp. Unit Relay Board
 
 ALLEN BRADLEY 1745-E101  2150ES  SERIES B SLC100 EXPANSION -NEW
 
 Allen Bradley Analog Input Exp. Unit 1745-E106 / A NIB!
  
 Allen Bradley SLC 100 Expansion Unit 1745-E105, #8868
 
 New in Box 1745-E106 Allen Bradley Exp1745E106 N802
 
 Allen Bradley SLC150 Expansion Rack 1745-E153
 
 Allen Bradley SLC 100 PLC Expansion Unit 1745-LP101 NR
 
 Allen Bradley 1745-B1 Lithium 3.0V PLC Battery
 
 Allen Bradley Model 1745-E105 Relay Output Expansion
 
 NEW Allen Bradley 1745-E105 SLC 100 Expansion
 
 NEW -Allen Bradley 1745-C2 SLC-100 Expansion Cable- NEW
  
 Allen Bradley Model 1745-E101 Relay Output Expansion
 
 ALLEN BRADLEY 1745-PT1 SER. A FRN. 2 SLC PROGRAMMER
 
 ALLEN BRADLEY SLC 150 1745 E151 EXPANSION UNIT PLC
 
 Allen-Bradley 1745-E151 1745-E101 Expansion Units
 
 Allen Bradley Expansion Unit 1745-E101 SerB NOB!
 
 Allen-Bradley 1745-E105 SLC100 PLC Relay Expansion Unit
 
 Allen Bradley Model 1745-E103 Expansion Unit
  
 Allen-Bradley 1745-E153 SLC150 PLC Expansion Unit
 
 Allen-Bradley 1745-E151 SLC150 PLC Expansion Unit
 
 Allen Bradley 1745-LP154 B SLC 150 Processor Unit
  
 Allen Bradley 1745-E151 SER A SLC 150 Expansion Unit
 
 Allen-Bradley SLC Programmer 1745-PT1
 
 Allen-Bradley 1745-PT1 SLC-100 Programmer

 1745-LP101 _B104.1
 
 Allen Bradley Pocket 2150ES  Programmer 1745-PT1 1745PT1 ____C6
 
 ALLEN BRADLEY 1745-PCC PROGRAMMABLE CONTROLLER NIB
 
 Allen Bradley SLC 150 1745-LP151 Ser C 11745LP151
 
 Allen Bradley 1745-PT1 Series A
 
 ALLEN BRADLEY SLC 100 1745-LP101 SER. A PROCESSOR UNIT
  
 Allen Bradley 1745-PT1 Series A *NIB*
 
 ALLEN BRADLEY 1745-LP103 SER D FRN 5
 
 ALLEN BRADLEY SLC 100 1745-LP101 SER. D PROCESSOR UNIT
 
 Allen Bradley SLC Processor 1745-LP101 and 1745-E101
 
 Allen Bradley SLC 150 Programmer 1745 E151 NIB
 
 Allen Bradley A-B 1745-LP153 SLC 150 Processor Unit
 
 Allen Bradley 1745-LP101 D 1745LP101 SLC 100 Processor
 
 Allen Bradley SLC-150, Cat # 1745-E153, Ser.A =
 
 Allen Bradley 1745-LP151 SLC 150 1745LP151
  
 ALLEN BRADLEY 1745 LP101 PROCESSOR UNIT SLC 100
 
 Allen Bradley 1745-TCAT Series B with Key & Cable
 
 Allen Bradley SLC 150 2150ES , 1745-LP153 C, PLC CPU **TESTED**
  
 Allen Bradley 1745-LP104 Ser.A includes 1745-M1B EEPROM
  
 Allen Bradley SLC100 1745-E103 Ser B Programmable
 
 Allen Bradley SLC100 Programmable Control #1745-LP101
  
 Allen Bradley 1745-C2 1745C2 SLC 100 150 Cable Used
 
 Allen Bradley SLC 150, 1745-E153 ser A
 
 ALLEN BRADLEY SLC 150 HIGH SPEED INPUT MODULE 1745-E155
 
 ALLEN BRADLEY SLC 150 HIGH SPEED INPUT MODULE 1745-E155
 
 Allen Bradley SLC 100 Expansion Unit 1745-E101 __B104.1
 
 NICE ALLEN BRADLEY SLC 150 PROGRAMMABLE 1745-LP153
  
 1 NEW ALLEN BRADLEY 2150ES  1745-M1 MEMORY EEPROM MODULE NIB
 
 Allen Bradley SLC100 1745-LP101 Programmable Controller
  
 Allen Bradley 1745 - LP101
  
 Allen Bradley 1745-LP103 Series D
  
 ALLEN BRADLEY 1745-E105 SLC100 RELAY OUTPUT PLC1074
  
 Allen Bradley Programmable Controller SLC 150 1745-E151

 ALLEN BRADLEY 1745-LP101 SLC 100 PLC GREAT CONDITION !
 
 ALLEN BRADLEY 1745-E101A SLC 100 EXPANION UNIT
 
 ALLEN BRADLEY 1745-LP101 PROGRAMABLE CONTROLLER
 
 Allen Bradley SLC 150  2150ES Expansion Unit, 1745-E151, Ser. B
 
 Allen Bradley SLC 100 Programmable Controller 1745-E106
  
 Allen Bradley SLC 150, 1745-E151 /A, Expansion *TESTED*
 
 ALLEN BRADLEY SLC 100 1745-E106 SER. A EXPANSION UNIT
 
 ALLEN BRADLEY A-B SLC100 1745-E106 EXPANSION 1745E106
 
 Allen Bradley SLC 150 Expansion Unit 1745-E151 Series B
 
 Allen Bradley 1745-E105 1745E105 C SLC 100 Expansion Un
  
 Allen Bradley Memory  2150ES Module 1745-M1 NIB __C48
 
 Allen Bradley SLC100 1745-E101 Programmable Controller
 
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 Allen Bradley Cable 1745-C3 Used
 
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 2 ALLEN BRADLEY SLC100 BASIC EXPANSION UNITS #1745-E101
  
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