We have been manufacturing and selling high-quality test and measurement devices for workshops for 50 years. The result: Our current product range, which offers not only many well-known and established products, but also solutions to new problems as well as intelligent tools for demanding users.

Code maintainer

Code maintainers (Emergency power units).

Whenever it is necessary to disconnect the vehicle´s battery, so in case of maintenance jobs and repair works, particular meqasures have to be taken to prevent the loss of electronic data and codes (drive-away lock, radio codes, door opening, adjustment of seat and mirrors, etc.). In order to save the vehicle´s electronic data, the use of code maintainers (emergency power units) is vital.

For a detailed view over LR-Code Maintainers (emergency power units), please consider the table below.


DescriptionNSV 02NSV 02NSV 03NSV 03/1
built-in current supply       X  
with auxiliary battery only        X       X
main alimentation 230V/50Hz        X   
accumulator alimentation        X  
connection via cigarette lighter        X      X      X       X
polarization/protected against        X      X      X       X
overload protection        X      X      X       X
incl. electronic protection        X      X      X       X
permissible on-board voltage       12 V    12 V    12 V     24 V
maximum output current     250 mA      2 A     2 A      2 A