Models 811 and 851 are identical in appearance except for the model
number shown on the facia.
The Day and Time are displayed as five digits on the liquid crystal display
The first digit in its separate window marked Day will be a numerical from
1 to 7 which may be allocated in sequence to the days of the week at the
user’s discretion. The normal convention is Monday = 1, Tuesday = 2 ………
Sunday = 7.
The remaining four digits in the window marked Time will display the time
to a resolution of one minute from 0000 to 2359.
A short ‘bleep’ will be heard when a keypad is pressed. In addition when
a numeric keypad is pressed the associated digit on the LCD will either
blink or change.
There are five red indicator lights. Four are associated with the keypads
‘Extend’, ‘Enter on’, ‘Enter Off ’ and ‘Crop’, and one labelled ‘Output’.
The 2 position selector switch may be set to Off to override the programmes
or it may be set to Auto to follow the programme which has been set.
The programme indicator lights will switch on and off to follow the set
programme events in both the selector switch positions but the output
status indicator light will only be on if the selector switch is at Auto and
either the Enter On or Extend indicator lights are on.
If the Enter On and Crop indicator lights are On the output status indicator
light will be off .
It is recommended that the key be removed from the keyswitch to prevent
unauthorised or accidental changes to the settings. The key can only be
removed when in Run position.
For more information on the 811 Commercial Time and Bell-Ringing Control Click here.