
Input and Output Connections
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AC-425x-B Hardware Installation and User Manual
4.4
Card Readers and Keypads
Each access control panel can be connected to a maximum of four readers or 8 readers when
using MD-D04B. There are three available types of reader:
Card readers
Keypads
Dual keypad card readers
A keypad is required for any reader mode that requires PIN code entries, such as "Card or
PIN", "PIN Only" or "Card and PIN (Secured mode)".
When connecting a reader, the following should be defined:
Scenario
Setting
Two readers per door
Door 1 – Reader 1 IN/OUT
Door 1 – Reader 3 IN/OUT
Door 2 – Reader 2 IN/OUT
Door 2 – Reader 4 IN/OUT
One readers per door
Door 1 – Reader 1 IN/OUT
Door 2 – Reader 2 IN/OUT
Door 3 – Reader 3 IN/OUT
Door 4 – Reader 4 IN/OUT
When using the MD-D04B, the following should be defined:
Scenario
Setting
Two readers per door:
Door 1 – Reader 1 IN/OUT
Door 1 – Reader 3 IN/OUT
Door 2 – Reader 2 IN/OUT
Door 2 – Reader 4 IN/OUT
Door 3 – Reader 5 IN/OUT
Door 3 – Reader 7 IN/OUT
Door 4 – Reader 6 IN/OUT
Door 4 – Reader 8 IN/OUT
One readers per door:
Door 1 – Reader 1 IN/OUT
Door 2 – Reader 2 IN/OUT
Door 3 – Reader 3 IN/OUT
Door 4 – Reader 4 IN/OUT
Door 5 – Reader 5 IN/OUT
Door 6 – Reader 6 IN/OUT
Door 7 – Reader 7 IN/OUT