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4-4
Expanded System
1. Common trunk line: maximum of 2 trunk lines
2. Sub trunk line: maximum of 4 trunk lines
Maximum of 125 units (maximum of 48 units for standard
system)
• The wiring of the sub trunk line is the same as the standard
system. For details, see 4-1 to 4-3.
[1] Entrance Station
• Basic System #1 - #5
• Expanded System (#1 - #8) x 2
[2] Security guard station GH-MK
• Standard System #1, #2
• Expanded System (#1, #2) x 2
[3] Expanded video bus control unit GH-VBX
[4] Expanded bus control unit GH-BCX
[5] Bus control unit GH-BC
[6] Distribution terminal (junction): sold separately
[7] Power supply adapter PS-2410LC, PS-2410LD, PS-2410DIN
NP: Non-polarized
4-5
External Relay Connection
[1] Input wire (blue)
[2] Input wire (white)
[3] Output wire (orange)
[4] Output wire (orange)
[5] Timer (sold separately)
[6] Buzzer
[7] Entrance light
• GH-RY contact specifications: AC/DC 24 V, 0.5 A ([3], [4])
[2][1]
[4]
[3]
[5]
AC
B
GH-RY
[6]
[7]