User selectable for 12 or 24 hour
operation. Bright red,
green, yellow or blue,
colour matched and brightness
selected LED characters.
Ultra bright, daylight
visible red or yellow/amber
LEDs are available for SE models
used for outdoor or very
high ambient light conditions.
The display brightness
can be manually pre-set
or controlled automatically.
The following optional display modes may be selected
by the user:
alternating time - date
alternating temperature - time - date note. temperature display requires optional 406 temperature sensor
when the digital clock is displaying time and temperature or time and date the interval between display changes
is user adjustable.
The internal time base is pre-programmed
for leap years and the local
automatic seasonal time changes
can be programmed by the user.
Clock cases are finished in high quality brushed
black or silver anodising and manufactured from
aluminium extrusion and sheet.
Digital Clock enclosures
can also be supplied painted to
any standard RAL colour as an
extra cost option. Ten different case installation
options are available for all applications.
The 400A series LED digital clock range can be supplied
for operation from 110 or 230v
50/60 Hz ac supplies or from 12v,
24v or 48v dc supplies at extra
cost. The operational location and supply voltage should be specified
at time of order so that
the unit is supplied with the
correct mains connection.
simple stopwatch operation using external switches
The digital clock can be user programmed to function as a simple stopwatch controlled
by two user supplied, voltage free, switch contacts connected to screw terminals on the
rear of the clock or internally in the case of .SE models.
The two switches function as stop/start and hold/reset controls.
The display may be programmed to show a stopwatch count in hours, minutes and seconds
(hours and minutes for 420A model) or minutes, seconds and 1/100 seconds
(minutes and seconds for 420A model).
stopwatch operation using 496A control panel
The 496A stopwatch
control panel provides a convenient
means of operating a 401A,
420A or 490A digital clock as
a simple stopwatch. The 496A
panel is fitted with sealed
and is intended for flush mounting.
The panel is also available mounted in a hand-held case or in
an enclosure suitable for wall mounting.
programmable stopwatch operation using 402A control panel
The 402A stopwatch control panel enables 401A, 420A or 490A series LED digital clocks to be used both
as multi-function programmable up/down stopwatches and as time-of-day clocks with the display freely switchable between
time-of-day and stopwatch time. The following counting modes are programmable:
up from zero
count down from a pre-programmed start-time to stop at zero.
count down from a pre-programmed start-time and then up through zero.
down to zero with
from a pre-programmed
Standard surface mounting case complete with multi-angle mounting brackets
Flush mounting case with a 6mm wide (0.25") front retaining bezel and supplied with adjustable rear mounting clamps
for mounting in a control panel with rear access
Flush mounting enclosure with a 6mm wide (0.25") retaining case bezel, with a steel mounting
box for mounting in a solid wall
Double sided clock for ceiling suspension, complete with supports for a drop of up
to 1m - (39.4"). Support tubes for greater drops can be supplied at additional cost
Single sided clock for ceiling suspension, with two support tubes for a drop of up to 1m
- (39.4"). Support tubes for longer drops are available at extra cost
The following IP65 - NEMA 4X rated case type options are available for 401x.xSE
and 420x.xSE outdoor clocks for weatherproof applications.
IP65 rated surface mounting
case supplied with multi-angle
Double sided IP65 rated case for ceiling suspension.
Single sided IP65 rated case for ceiling suspension.
Single sided IP65 rated case for pole mounting.
Double sided IP65 rated case for pole mounting.
401x, 420x,and 490x series digital clocks will operate
as stand-alone clocks or may be synchronised from a wide range of external time
When used in stand-alone configuration the digital wall clock maintains time keeping from a high stability
internal crystal controlled time base. The clock can be user programmed for the appropriate local automatic seasonal time-change and
is pre-programmed for leap-years.
Standard synch. modes
w482® time code
MSF & DCF radio time codes (requires 484 series radio time code receiver)
GPS satellite time signals (requires 488 series GPS time synchronisation sub-system)
alternate and single polarity 12-48v impulses
MB serial & MOBAline® time codes
Optional synch. modes
EBU or SMPTE time code - requires optional 404.E internal interface
IRIG-B and afnor NFS 87 500 time codes - requires optional 404.I module
NTP option allows synchronisation via an ethernet interface from
a remote master clock or time source
401x, 420x and 490x series digital wall clocks can act as a master to control up to ten 400A series
LED clocks and calendar clocks as slaves when fitted with an internal 404.M module.
401x, 420x and 420x digital wall clocks will
operate from a 110v - 240v 50/60Hz ac power supply
depending on order specification. The power consumption
is ‹0.2A @230v. operation from 24v DC supplies
is available at extra cost.
Standard digital clocks for internal use: 0°C - 50°C .xSE clocks with IP65 - NEMA 4X cases: -20°C +50°C
Standard digital clocks for internal use: 0% to 95% non condensing .xSE clocks with IP65 - NEMA 4X cases: 0% to 100%
99.9998% @ 20°C
Synchronised to DCF
or MSF: within
25mS of UTC
Synchronised to GPS:
- 1mS of UTC
401x and 420x LED digital clocks,
comply with the European Community Electromagnetic
Compatibility Directive 89/336/EEC (as amended by 91/263/EEC, 92/31/EEC and 93/68/EEC) and Low Voltage
Directive 73/23/EEC (as amended by 93/68/EEC), when used and installed in accordance
with our recommendations. They conform to the international
Railway applications EMC
401A.12.x.xSE, 420A.12.x.xSE, 401A.170.x.xSE,
401A.170.x.xSE, 401A.220.x.xSE, and 401A.220.x.xSE, series large outdoor
digital clocks with IP65 - NEMA 4X cases have been tested to conform with the Railway EMC standard:
x.SE environmentally protected clocks are certified to IP65
- NEMA 4X and
range models have been
independently certified to:
EN 60529 - dust and water protection
EN 60068-2-1 cold temperature operation
EN 60068-2-2 high temperature operation
you have a Digital Clock or Digital Wall Clock specification
that is not covered by our wide standard range please contact our sales department.
Copyright 2008 Wharton Electronics Limited. All
Wharton Electronics LED digital clock
time displays, large LED wall clock and
outdoor large digital clocks, commercial
clocks and industrial clocks