Timeguard TGBT4 - Manual (Page 4)

3. Operation
The boost may be stopped at any time by pressing the Boost button
repeatedly until all the LED’s are extinguished.
The boost period may be increased at any time by pressing the Boost button
until the required time LED is lit. In which case the indicated boost time will
start from when the Boost button was pressed.
If the button is pressed and then held the LED’s will cycle upwards with 1
second between each change. It will go in the sequence 1/4, 1/2, 1, 2, OFF,
1/4, 1/2 etc.
The required boost time is selected by pressing the button marked Boost
repeatedly. The LED’s adjacent to the time markers (above the Boost button)
will light up in the sequence:-
First push gives 1/4hr boost (LED opposite 1/4 is on)
Second push gives 1/2hr boost (LED’s opposite 1/4 and 1/2 are on)
Third push gives 1hr boost (LED’s opposite 1/4, 1/2 and 1 are on)
Fourth push gives 2hr boost (LED’s opposite 1/4, 1/2, 1 and 2 are on)
Fifth push returns to zero boost (all LED’s out)
Once the boost selected is underway the LED’s will go out sequentially
indicating the approximate boost time remaining.
Example:- 2hr boost has been set.
After 1hr the 2hr LED will go out indicating 1hr remaining.
After a further 1/2hr the 1hr LED will go out indicating 1/2hr remaining.
After a further 1/4hr the 1/2hr LED will go out indicating 1/4hr remaining.
The 1/4hr LED begins to flash when there is less than 1 minute remaining.
In this way the user has an approximate guide to the remaining duration of
the boost.
Stopping or Increasing Boost