DEM200 Sound Level Meter Velleman

max / min function
auto backlight on/off
auto power off
windscreen, battery, user manual
Sonometer is for indicative measurements only. It is not compliant with IEC 61672-1 electro-acoustic international standard so they cannot be used for official measurements.
Manual: https://valofirma.fi/app/uploads/2021/07/dem200a6v02.pdf