Timeguard ETU17 - Manual (Page 3)

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Battery:
This product has a factory fitted rechargeable battery. If the ETU17
is left out of a live socket for more than 1 month the display may go
blank. In this case plug into a live socket, wait four hours, and apply
reset – see section 1 before programming.
Programming Overview:
This is a seven day (weekly) timeswitch which has six programmes,
each of which can be block programmed to work on all of the five
weekdays, both weekend days, or all 7 days (24 hour operation).
Programmes can also be designated to operate on individual days.
Only two setting buttons are required, <Change> and <Program>.
In normal operating mode the <Change> button is used to switch
ON or OFF, overriding the timeswitch until the next programmed OFF
or ON time. During programming the <Change> button is used to
set the hours, minutes and days. The <Program> button is used to
select the clock time and day or the 6 programmed ON/OFF times
and days and to review them once they have been set. Each time the
<Program> button is pressed in programme mode the display will
flash either the days, hours or minutes in turn, starting with the clock
time and day then the first ON time and day(s), first OFF time, second
ON time and day(s) etc. Wherever the days, hours or minutes are
flashing they may be set using the <Change> button. Once set the
<Program> button is pressed again to proceed to the next stage.