Kelvin Duo, Инструкция по эксплуатации

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9
Clip charging process
The thermometer transmitter clip has been fitted with a rechargeable
battery to avoid having to repeatedly open the sealed back plate; it also
reduces the overall running cost of the unit by not having to replace
batteries periodically.
Use the USB charging lead supplied and plug the large USB lead into a
suitable USB power supply (PC, laptop, USB PSU).
Remove the rubber plug on the side of the clip to expose the USB socket.
Plug the small end of the USB cable into the USB socket on the side of the
clip. The clip will start charging immediately.
The LED indicator will be illuminated permanently to indicate the charging
sequence is underway. When the battery charging cycle is complete the
LED will turn off.
Remove the USB lead from USB sockets in the clip and the charging unit.
Replace the rubber plug back into the USB socket on the side of the clip.
When the battery power within the clip has become low, the LED will flash
every 2 seconds to indicate that recharging is required.
Ensure the power is turned off after use to conserve the battery life.