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Digital Decibel Meter - Portable SPL Meter with Backlit LCD Display (35-130dB(A) Range) - MAX/MIN Data Hold - Digital dB Reader Meter for Home, Classroom, Workshop, and Office Use $21.99 from $20.79	Decibel Meter, Tadeto Digital Sound Level Meter Portable SPL Meter 30dB to 130dB MAX Data Hold with LCD Display Backlight A/C Weighted for Home Factories $29.99 from $25.05
LX-101A Digital Lux Meter Along with Factory Calibration Certificate (Range: 50,000 Lux) for Auditoriums, Theatres, Stadiums, Amphitheatre, OT Rooms from $92.00	TopTes Decibel Meter, TS-501A Sound Level Meter with 2.25” Backlight LCD Screen, Portable SPL Meter with A Weighted, Range 30-130dB, Data Hold, MAX/MIN, Use for Home, Noisy Neighbor, Factory - Orange from $26.99
Real Voice Power Meter People from $4.99	Dr.meter LX1330B Digital Illuminance Light Meter, 0-200,000 Measurement Range Lux Meter from $34.99
People Meter from $0.99	pH Test Strips for Women Body Urine Drinking Water Pool Hot Tub Spa, 100 Strips pH.0-14 Alkaline Acid Level pH Testing Tester for Humans Saliva Pet Food Diet Soil pH Monitoring with Storage Case from $3.99 ($0.04 / Count)
Dr.meter Professional LED Light Meter, Digital Illuminance Meter with 0-200,000 Measuring Ranges and 270 Degree Rotatable Detector from $34.99	People Meter from $0.99