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Output

DESCRIPTION

Models 811 and 851 are identical in appearance except for the model 
number shown on the facia.
The 

Day 

and 

Time 

are displayed as fi ve digits on the liquid crystal display 

(LCD).
The fi rst 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 fi ve 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. 

TIME OF DAY

The mains electricity supply must be ON, the key inserted and turned 
to 

Set Time

 position before carrying out the operations detailed below. 

When the timeswitch is fi rst connected, or when the battery has been 
allowed to discharge fully, and the mains electricity supply is switched ON 
a dash (-) will be displayed in each of the fi ve digit positions.
Decide which day of the week you wish to assign as Day 1.
Press the number key representing the current day of the week (listen for 
the ‘bleep’).
The remaining days will be automatically numbered in sequence.
Key in the time using four keypads e.g. 8:30 a.m. must be keyed as

 

0 8 3 0

and 6:15 p.m. as

 

1 8 1 5

 

The unit will not allow the entry of a spurious day or time e.g. day 8 will not 
be accepted nor will a time entry of 3600. Depression of an out of range 
key will not register on the display; the LCD digit will blink but remain 
unchanged until an acceptable number is keyed.

DO NOT PRESS ANY FUNCTION KEYPADS.

Returning the key to the 

Run

 position will enter the time shown on the 

display.

Seven Day Single Channel Electronic Timeswitch

Models 811 and 851

User Instructions

SETTING SWITCHING TIMES

The mains electricity supply must be ON, the key inserted and turned to 
the 

Set Programme

 position before carrying out any of the operations 

detailed below.
Initially the display will show

 

E E E E

indicating that the memory is empty.
Since the timeswitch is capable of automatically carrying out up to 200 
switching operations it is recommended that the required programme be 
tabulated before setting is commenced, noting that the day number on 
display is the current day of the week. A table is provided for this purpose. 
It is not essential to key in the programme in sequence since it will 
automatically be sorted into chronological order.

To set a programme event:

First press the number key representing the day of the week to be 
programmed.
Secondly, key in the time using four numeric keypads in the range 0000 
to 2359.
Finally press 

‘Enter On’

 or 

‘Enter Off ’

 to enter the required event into 

the memory.
The unit will not allow the entry of a spurious day or time e.g. day 8 will not 
be accepted nor will a time entry of 3600. Depression of an out of range 
key will not register on the display; the LCD digit will blink but remain 
unchanged until an acceptable number is keyed.
Proceed with the programming of every event using the same entry 
sequence.
If an attempt is made to exceed 200 programme events then the display 
will show

 

F F F F

indicating that the memory is full.

7

8

9

4

5

6

1

2

3

Verify

0

Cancel

Enter On

2I08

4

Auto Off

Set

Programme

Run

Day

Time

Day of Week Display

Time of Day Display

10 

Numeric 
Keypads

6 Function 

Keypads

3 Position 

Keyswitch

Output Status 

Indicator Light

CAUTION: The unit operates at mains voltage and should only be opened by a 
qualifi ed engineer after disconnection from the mains supply.

851

Programme 

Indicator Lights

Set Time

Extend

Enter Off

Crop

2 Position 

Selector 

Switch

Model 

811 or 851

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