Model: ZEN-20C3DR-D-V2. 
Name: Economy type (Expansion I/O Units cannot be connected).
No. OMRON ZEN-20C2AR-A-V2 of I/O points: 20.
LCD display: Yes.
Power supply voltage: 12 to 24 VDC.
Inputs: OMRON ZEN-20C2AR-A-V2 12,  12 to 24 VDC. 
Outputs: 8,  Relays.
Buttons, OMRON ZEN-20C2AR-A-V2  calen
Model: 
ZEN-20C1DT-D-V2. 
Name: Standard LCD type.
No. of I/O points: 20.
LCD display: Yes.
Power supply voltage: 12 to 24 VDC.
Inputs: 12,  12 to 24 VDC.
Outputs: 8,  Transistors.
Buttons,  calendar,  and clock: Yes.
Analog 
Model: ZEN-20C2DT-D-V2. 
Name: LED type without display.
No. of I/O points: 20.
LCD display: NO.
Power supply voltage: 12 to 24 VDC.
Inputs: 12,  12 to 24 VDC. 
Outputs: 8,  Transistors.
Buttons,  calendar,  and clock: No.
A
Model: ZEN-20C1AR-A-V2. 
Name: Standard LCD type.
No. of I/O points: 20.
LCD display: Yes.
Power supply voltage: 100 to 240 VAC.
Inputs: 12,  100 to 240 VAC.
Outputs: 8,  Relays.
BButtons, ZEN-20C2AR-A-V2  calendar,  and clock: Yes.
Analog i
   
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