The Rion NL-X3 series of sound level meters allows its user to maximize the effectiveness of noise measuring tasks. Equipped with LAN terminals, these meters provide the ability to monitor noise levels from anywhere by checking the operational status remotely from a web browser. The meter can also be used with a mobile router for wireless communications. Additionally, the meter can be use for both environmental noise monitoring and the noise monitoring of equipment and machinery, depending on needs.

The NL-X3 series comes in three models: NL-63, NL-53, and the NL-43. Each model has it's own microphone type and measurement frequency range. Equipped with a USB Type-C, the meter can be hooked up to an external power supply or transfer data to a PC. Theses meters are suitable for use in environments with noise and low frequency sounds measurements, such as A-, G-, or Z-weighted sounds.