M522
The M522 Meridian® Mate
Expansion Module is compatible
with both the M5216 and M5316.
B
B
E
E
N
N
C
C
H
H
M
M
A
A
R
R
K
K
P
P
E
E
R
R
F
F
O
O
R
R
M
M
A
A
N
N
C
C
E
E
A
A
N
N
D
D
P
P
O
O
W
W
E
E
R
R
M522
Meridian®
Mate
Expansion Module
Key Features:
•
22-button expansion unit, with associated LCD indicators, providing
additional keys for lines or features.
•
Up to two expansions can be used, for a total of 44 extra
programmable buttons.
•
Combined with Meridian® Digital Centrex, the M522 offers effective
mini-console capabilities.
proven
expandable
powerful
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OM
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ORLD
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