Wharton 4550 calendar clock range with numeric day and date with 57mm (2.3") or 100mm (4") digits

4550 calendar clock with blue  or yellow digits

4550x.057.B.S & 4550x.057.Y.S with European date format and blue and yellow/amber digits

4550 calendar clocks with green or red digits

4551x.057.G.S & 4550x.057.R.S with US date format and green and red digits

 57mm digits - 25m (75ft)  more
 100mm digits - 50m (150ft)

  • Our 4550 range of numeric time and date calendar clocks show the date as a numeric value in either European (4550) or US (4551) formats with an hours, minutes and seconds time display.
  • The range has a 12 or 24-hour time and numeric date display using two rows of 57mm (2.3") or 100mm (4") ultra-reliable blue, green, red or yellow/amber LED digits.

Wharton numeric date clocks have many user-selected modes of operation:

  • E and NE versions can be used in stand-alone applications using their internal time references.
  • The clock has rear connections to enable time synchronisation using one of a wide selection of time code protocols from a Wharton 5000 series master clock or suitable third party time reference.
  • You can synchronise individual calendar clocks with a satellite-based atomic time reference via a control message from a Wharton 488HS series GPS or GLONASS time signal receiver.
  • N and NE versions can be controlled and synchronised to time via their 10/100Base-t Ethernet NTP connection to your existing network with accurate time information provided by a local or internet time server for simple, low-cost installation and control.

Stopwatch operation

  • Wharton 4000 series calendar clocks have time digits freely switchable between the display of time-of-day and the display of multifunction stopwatch or countdown time.
  • The stopwatch and countdown timer functions are controlled by the IR handset supplied, by an optional dedicated switch panel or by user-supplied voltage free contacts.
  • The following stopwatch and countdown timer functions are user programmable:
    • Stopwatch display modes
    • Stopwatch display resolution
    • Stopwatch count direction
    • Stop/start and hold switch actions
    • Countdown start count
    • Using external, voltage free, switch contacts - E and NE versions only
    • Network stopwatch mode - network versions only
  • Further information about stopwatch & countdown timer operation

Installation

  • The high-quality clock enclosures have a black, silver or special order finish. Case type and colour information.
  • The standard model is suitable for freestanding or wall mounting using the multi-angled brackets supplied. Mounting options include cases for flush wall mounting and single or double-sided clocks with mounting supports for ceiling suspension.
  • 110-230V AC, 24 or 48V DC or PoE (Power over Ethernet) power supply options.
  • All Wharton day-date products are designed, manufactured and tested to International Quality and Performance Standards.
  • Unrivalled free product lifetime technical support with unlimited advice and information to the original user for the life of the digital clock. Many previous models are still in service more than 15 years after first supply.
model size - w x h x d weight
4550x.057 450 x 230 x 58mm  17.7" x 9.5" x 2.3" 4kg  - 9lb
4551x.057 450 x 230 x 58mm  17.7" x 9.5" x 2.3" 4kg  - 9lb
4550x.100 800 x 420 x 66mm  31.5" x 16.5" x 2.6" 8.5kg  19lb
4551x.100 800 x 420 x 66mm  31.5" x 16.5" x 2.6" 8.5kg  19lb
sizes and weights are for .S. single sided wall mounted clocks
order code example
4550E.100.B.S.UK.Silver

A - model (Day of week, day of month, month and hours, minutes and seconds): 4550
B - version (non-network): E
C - display height (100mm): .100
D - display colour (blue): B
E - case style (surface) : .S
F - power supply (UK): .UK
G - case colour (silver): .Silver
A - model code
Day, month, year date display 4550
Month, day, year date display 4551
B - version  
non-network version with enhanced features E
network version N
network + enhanced features NE
C - display height  
57mm (2.3") .057
100mm (4") .100
D - display colour  
blue - please note that blue illuminated characters can appear slightly out of focus to some people due to variations in the response of the human eye to blue light and typically have a shorter practical viewing distance than red, green or yellow characters. .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
24v DC power supply .24vdc
48v DC power supply .48vdc
IEEE 802.3af-2003 Class 3 .POE
G - case colour  
black .black
silver .silver
RAL or other standard case finish .RAL9010