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Rolls SLM305 Digital Sound Level Meter



The Rolls SLM305 is a Digital sound level meter with a back lit display. The SLM305 operates off a single 9 volt battery. It features a clean elegant design with high quality construction throughout. It features a MAX button to turn on and off a maximum level reading feature making it easy to get a good reliable maximum dB reading rather than just guessing it yourself off of an erratic display. The SLM305 also has an automatic OFF function that will turn the unit off after 10 minutes to save your battery.


  • Auto off to preserve batteries
  • Accurate to +/- 1dB
  • MAX hold dB feature
  • Automatic backlight display
  • Low battery indication
  • Operates off of a single 9V battery

Warranty: 12 Months

Measuring range: 30dBA to 130dBA
Digit resolution: 4 digit & .1dB metering
Frequency response: 31.5Hz to 8.5KHz
Sampling rate: 2 times/sec.

To download an operation manual please click here.

As of 21/4/20 orders $100 and over ship FREE to most areas. Orders $49 and under Postage is $8 and Express Shipping $15. Order $50 to $99 are $15 for express shipping*. This covers one delivery attempt so please provide an address where someone is available to sign for courier delivery between 9am and 5pm weekdays. You can instruct us to ask the courier to leave your parcel unattended in a safe place, although please be aware that if anything happens to the parcel, neither us nor the courier company can be held responsible. Work addresses are a great delivery option. If using a work address please include the business' name.

* for some larger items does not apply to Australian remote island locations, some mainland remote locations (outside Darwin NT and Perth WA metro areas) or outside Australia. If unsure if you are entitled to capped shipping it is best to contact us prior to placing order.