Alarm Chart

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Comparative Alarm Loudness
for Sper Scientific Timers

. COUNT DOWN ALARM CLOCK ALARM
PART NO. DESCRIPTION Approx. dBA at 1 foot Approx dBA at 6 feet Approx. dBA at 1 foot
810005

Large Display Timer (White)

 78~81 66~69 78~81
810006 Large Display Timer (Black) 78~81 66~69 78~81
810012 Water Resistant Stopwatch . . ~55
810013R Lightweight Stopwatch . . ~77.2
810015 5 Channel Timer 65~68 53~56 65~68
810017 Project Timer 77~80 64~67 .
810018 Stopwatch Recorder . . ~55
810019 Mini Timer (99 Min) 66~69 50~53 66~69
810021 Mini Timer (16 Hr) 44~47 38~41 44~47
810022 Large Display Stopwatch . . .
810024R

Count Up/Down Timer(99 Minutes)

 78~81 63~66 78~81
810025R Stopwatch Timer 73~76 59~62 73~76
810026R Count Up/Down Timer 77~80 64~67 77~80
810027 Simultaneous Start Timer 80~85 67~72 80~85
810029R 8 Memory Stopwatch 74~77 . 74~77

810030  

Mini Time Controller

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810033 60 Memory Stopwatch . . ~80

810034  

Water Resistant Wall Clock

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810035 Large Display Water Resistant Stopwatch . . ~60
810036 100 Memory Water Resistant Stopwatch . . .
810037 Electro-Luminescent Stopwatch . . 70~75
810038 Talking Timer 81~85 78~82 81~85
810040 Visual Alarm Timer 75~80 60~65 .
810041 Visual Alarm Timer 75~80 60~65 .
810042 Visual Alarm Timer 75~80 60~65 .
810044 Hourglass Timer 65~68 53~56 .
gl173 GRALAB UNIVERSAL TIMER adjustable . .
gl450 GRALAB ELECTRONIC  TIMER adjustable

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The sound levels are approximate and will vary by individual timer and battery strength.  This chart is an average for each model and should be used for comparison purposes only.