Compact hand-held digital sound level meter. Large 3.5 digit LCD display reads measurements over Low (30-100dB) and High (60-130dB) ranges with accuracy ±1.5dB.Frequency range 31.5Hz to 8KHz.Resolution 0.1dB.Selectable time weighting 125mS/1sec.Max. hold function.Auto shutdown after 15 minutes inactivity.Weight 230g approx. Operates from 9V PP3 battery included. Supplied in a sturdy carry case with full instructions.The unit incorporates a tripod mount for long-term operation.