User Manual

ManualsBrandsExtech Instruments ManualsKitchen94/114 dB Sound Calibrator

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407744 & 407766 - V5.1 – 04/10

Description

Note that only the 407766 is pictured.

1. ½” Microphone adaptor *

2. 407766: OFF-94dB-114dB switch

407744: OFF-BATTERY TEST-94dB switch

3. 407766: POWER-ON / LOW-BATTERY status LED

407744: BATTERY OK LED

4. Battery compartment cap

* To remove the ½” adaptor, pull straight down

as shown in diagram below.