4520 series day date calendar clocks with 50mm characters
- order specification codes
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order code example
4520E.05.R.S.UK.Silver
    |    |    |   |  |     |       |
   A   B  C  D E   F     G
A - model (Day of week, day of month, month and hours and minutes ): 4520
B - version (non-network): E
C - display height (50mm): .05
D - display colour (red): R
E - case style (surface) : .S
F - power supply (UK): .UK
G - case colour (silver): .Silver

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A - model code
Day of week, day of month, month and hours, and minutes digits 4520
Day of week, day of month, month and hours, minutes and seconds digits 4530
Day of week, month, day of month and hours and minutes digits with PM indicator or hours, minutes and seconds digits 4533
Day of week, day of month, month and hours, minutes and seconds digits 4570
B - version code
non-network version with enhanced features E
network version N
network + enhanced features NE
C - display height code
all models: 50mm - 2" & 30mm - 1.2" .05
D - display colour code
blue .B
green .G
red .R
yellow .Y
E - case style code
surface mounting case for wall mounting .S
flush mounting case for use in a panel with rear access .FP
flush mounting case supplied with mounting box .FB
single sided ceiling suspended case .SS
double sided ceiling suspended case .DS
F - Power supply code
internal PSU 110-240vac 50/60Hz (standard)  
with Australian mains lead .AU
with EU mains lead .EU
with UK mains lead .UK
with US mains lead .US
24v DC power supply .24vdc
48v DC power supply .48vdc
IEEE 802.3af-2003 Class 3 .POE
G - case colour code
black .black
silver .silver
RAL or other standard case finish .RAL9010