A mains adapter is included with the delivery. Use it as often as you can. Then your batteries are charged when you need them.
If your mains adapter has disappeared, you can order a new one from Norsonic AS or your local representative.
It is possible to use an external DC voltage of 10 � 28 volt. The power consumption of the Nor145 is approximately 4 watt dependent on selected modes of operation.
If the external supply falls below 9 V, the instrument will use the internal batteries if available. If the instrument has switched off due to loss of power or insufficient supply voltage, the instrument will automatically switch on and resume operation after re-applying the external DC supply.
Lemo connector (type 0S) with positive voltage on centre-terminal. The instrument will automatically switch to batteries (or off if batteries are empty or not installed) if the external voltage is too low for operation within the stated specifications.