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By certification 
* Used the exclusive MICRO-COMPUTER LSI circuit and crystal time base to offer high accuracy measurement & fast measuring time.
* Wide measuring range & high resolution.
* Digital display gives exact reading with no guessing or errors.
* The maximum value during the measurement will be automatically held in memory and be controlled by Hold key.
* The use of durable, long lasting components, including a strong, light weight ABS-plastic housing assures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand.
* It meets requirements of IEC651 for type II sound level meter.
* Wide measuring range & high resolution.
* Digital display gives exact reading with no guessing or errors.
* The maximum value during the measurement will be automatically held in memory and be controlled by Hold key.
* The use of durable, long lasting components, including a strong, light weight ABS-plastic housing assures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand.
* It meets requirements of IEC651 for type II sound level meter.
