Nor263A er en håndbryter for fjernkontroll til Nor139 og Nor140 støymålere (også nor118)
Kabellengde er 5 meter.
En lysdiode (LED) indikerer at den kjører, start innspilling (bare Nor140). Er inkludert i Nor140 «annoyance recorder kit».
The Nor520 Bluetooth transceiver replaces the use of data interface cable between the measuring instrument and the PC. Hence, it is useable as a wireless alternative for many applications, and in combination with both the Nor139 and Nor140 (Nor118) sound level meters. Wireless download of measurement files may be performed using the NorXfer software, and wireless building acoustic systems may be achieved when used in combination with the CtrlBuild feature in the NorBuild software.
It is a compact unit plugged directly into the data communication part of the Nor139 and Nor140 (Nor118). The unit is supplied from the sound level meters internal batteries. The transmitting distance in free sight is 300 m.