4
FIGURE 11
Automatic charging function
Note:
When the unit warms up of which battery starts
being charged simultaneously, its red LED will be on
for 1 minute; whereas if the battery is being charged,
its LED will flash three times every 30 seconds; if
battery voltage drops to a defined low battery value,
the LED will flash once every 30 seconds. The LED
indication priority for different status is listed
hereunder:
Priority
Status
LED Indication
1
Warm up and
battery is being
charged
On steadily 1 minute
2
Battery
is
being charged
Flash rapidly three
time every 30
seconds
3
Low Battery
Flash rapidly once
every 30 seconds
Note:
The maximum charging period is 10 hours,
ranging from low to half-full voltage, while 15 hours,
from half-full to full voltage.
Upon first connecting to AC mains supply, the unit will
start working according to one of the following
scenarios:
Scenario A: if and when the battery is sufficiently
charged (at half-full voltage), the unit will start
detecting after 1 minute.
Scenario B: if and when the battery level is lower than
half-full and higher than low voltage value, the unit will
start detecting after 1 minute. During PIR motion
sensor detection, the unit will charge its battery to full
voltage then turn off charging function.
Scenario C: if and when the battery drops to a defined
low battery value, PIR motion sensor detection will not
be initiated until the battery is charged to half-full
voltage. During PIR motion sensor detection, the unit
will charge its battery to full voltage then turn off
charging function.
The following scenario will be applicable, subject to AC
mains supply being connected (not the first time
connection):
Scenario D: if and when the battery voltage is lower
than half-full and higher than low battery value, during
PIR motion sensor detection, the unit will charge its
battery to full voltage then turn off charging function.
If unfortunately low battery occurs, PIR motion sensor
detection
will not be initiated until the battery level is
charged to half-full voltage. During PIR motion sensor
detection, the unit will charge its battery to full voltage
then turn off charging function.
Scenario E: switching slide switch from “OFF” to
“AUTO” position will start warming up for 1 minute.
Low battery:
initiate compulsory
charging; turn off
detection function
Low battery ~
half-full:
initiate
compulsory
charging; turn off
detection function
Half-full:
turn off
compulsory
charging; initiate
half compulsory
charging; turn on
detection function
Low battery:
initiate compulsory
charging; turn off
detection function
Full voltage:
turn off half
compulsory
charging
Low battery ~
half-full:
initiate
half compulsory
charging
Half-full:
no
charging being
taken
Full voltage:
no
charging being
taken
Low
Full
Full
Low