Amazon.com: Ward's Sound Sensor, Range: 40 – 110 dB; Resolution: 0.1 dB (Add-on to Ward's Single Probe Base) : Electronics
Amazon.com: Medicook Soft Foam Sleeping Ear Plugs,40 Pairs NRR 33 Decibels Noise Cancelling Ear Plugs, Sound Blocking, Traveling, Flying, Working and Studying : Health & Household
PQ Small Ear Plugs for Sleep - 40 Small Foam Earplugs for Sleeping for Small Ear Canals!
Decibel Volume Meter:Amazon.com:Appstore for Android
TENMA - 72-935 - Sound Level Meter, 40 dB, 130 dB, 3.5 dB, 0.1 dB, 0 °C, 40 °C: Amazon.com: Industrial & Scientific
Amazon.com: New DB Electrical 900-20018 Solder, 40/60; 40% Tin 60% Lead; 0.032 Wire Diameter; 1lb Spool Compatible With/Replacement For Universal : Tools & Home Improvement
Decibel Sound Meter, Hand-Held Sound Level Meter 30dB to 13dB(A), Noise Meter Monitor with Backlight Alert, Noise Level Meter Tool for Home Office Job-site: Amazon.com: Industrial & Scientific
Amazon.com : Fox 40 Classic Official Whistle with Break Away Lanyard (Black) : Coach And Referee Whistles : Sports & Outdoors
WYZE Earbuds Pro, 40 dB Active Noise Cancelling Wireless Earbuds, 6 Voice-Isolating Mics ANC Bluetooth Headphones, Bluetooth 5.0 Wireless Charging Alexa Built-in True Wireless Earbuds : Electronics
Amazon.com: DB Link RL100 30-Amp/40-Amp 5-Pin 12-Volt Automotive Relay SPDT : Automotive
Cadrim Decibel Meter - Digital Sound Level Meter, Self-Calibration Decibel Reader, Noise Meter with LCD Display Measurement Range 40-130 dB spl Meter (Battery Included)…: Amazon.com: Industrial & Scientific
Amazon.com : Tetra Whisper Air Pump 20 To 40 Gallons, For aquariums, Quiet, Powerful Airflow : Pet Supplies
Amazon.com : Fox 40 Tri-Foxco Orange Classic Pealess Whistle, 115 db (Single with Lanyard) (LEPUSHPDJ6463) : Sports & Outdoors
Amazon.com: Extech 407730 Digital Sound Level Meter 40-130dB : Industrial & Scientific
Byram Laboratories DB-40 Meter DB40: Amazon.com: Industrial & Scientific
RC Professional USB Decibel Meter/Sound Level Reader(Advanced,Yellow) - - Amazon.com
Amazon.com: Decibel Meter Sound Level Reader by LotFancy, DB SPL Meter Noise Detector, Range 30dba - 130dba with Max/Min Data Hold Function, Large Backlit LCD Display, Self-Calibrated Batteries Included : Industrial &
Amazon.com: Decibel Meter-Digital Sound Level Tester, Sound Pressure Level(SPL) Reader Monitor 30~130dBA/C Noise Intensity, Volume Decibels Gauge with Bar Graph Max Hold (ANNMETER AN-882A) : Industrial & Scientific
Decibel-O-Meter:Amazon.com:Appstore for Android
