User's Manual

16
The tag continuously monitors the battery level. The battery capacity percentage is reported via wifi,
and the low battery status can be viewed on the LED window. The LED will blink periodically in red
instead of green. The tag will also report low battery status if it was internally restarted due to low
battery. The tag will continue to transmit wifi its status until the battery dies completely.
Symptom
LED blink
Wifi battery
capacity status
Wifi battery
status
Explanation
Battery is good
Green
Normal range
Ok
Battery capacity is good, tag has
not restarted due to low battery
Battery reaches end
of life (<10%
capacity)
Red
Low range
Low
Battery capacity is low
Tag has restarted
>10 times
Red
Normal range
Low
Tag has restarted due to low
battery
EMC compliance summary: When the Air +/- 15kV is applied, the EUT emits a "beep" four sounds, a red
light flashes, and a red light flashes for one second.
SMN-823W is not a life support system and does not cause any harm to the patient or environment. A
reset due to ESD will not affect essential performance and without basic safety consideration.