The SoundTest-Master from Laserliner is a sound level meter with an integrated long-term memory, real-time video display, and storage function for optimal documentation. Measurements are taken according to the standard curves dB (A) and dB (B). The long-term recording function offers 16,000 memory points or the option for real-time logging on a PC. Using software, the data can be transferred to a PC for analysis. The time evaluations can be set between 125 milliseconds and one second, allowing for optimal adjustment to noise dynamics. The device can be calibrated and adjusted at any time using the sound level calibrator.