DT-8852 31.5HZ-8KHZ Misuratori di Livello Sonoro Misuratore di Test Ambiente per Progetto Rumore qw
Frequency range 31.5 Hz - 8KHz. This device operates on a 9V battery (about 30 hours) or an AC adapter (included). A heavy duty carrying case is also included for the protection of the device and your convenience.