4590 series Islamic Hijri date calendar clock
- order specification codes
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order code example
    |    |    |   |  |     |       |
   A   B  C  D E   F     G
A - model (Day of week, day of month, month and hours and minutes ): 4540
B - version (non-network): E
C - display height (50mm): .05
D - display colour (red): G
E - case style (surface) : .S
F - power supply (UK): .UK
G - case colour (silver): .Silver

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4590 series with 50mm high characters - order specification codes

A - model code
 Islamic Hijri date calendar clock 4590
B - version  
non-network version E
C - display height  
50mm - 2" & 30mm - 1.2" .05
D - display colour  
blue .B
green .G
red .R
yellow .Y
E - case style  
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  
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
G - case colour  
black .black
silver .silver
RAL or other standard case finish .RAL9010