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Reference Guide

012-15849A

Sound Sensor

UI-5101

800-772-8700 (US)

 +1 916 462 8384

www.pasco.com

[email protected]

Hardware

Introduction

The Sound Sensor is designed to be used with a PASCO 

computer interface to make measurements of relative 

intensity of sound. 

The built-in sensing element of the Sound Sensor is an 

electret condenser microphone, which consists of an 

electret membrane, metal electrode, and field effect 

transistor that are in an efficient configuration yielding 

superior signal-to-noise ratios (>60 dB) and excellent 

frequency response (20 to 9,000 Hz).

Two stages of amplification are provided to condition the 

low-level signal from the microphone for input into the 

PASCO computer interface. The output from the sensor is 

bipolar and ranges between ±10 volts. The Sound Sensor 

can detect voltage levels as low as 0.0005 volts, 

corresponding to sound levels that are barely audible to the 

human ear. Sound levels ranging from classroom 

background noise (45 dB) to levels exceeding 100 dB are 

easily detected with the Sound Sensor.

Mini Microphone

8-Pin DIN 

Extension Cable

Sensor Mounting 

Rod

Connect this end 

to the interface.

Phone 

Jack

Built-in 

Microphone

DIN 

Plug

Foam 

Cover

Tie 

Clip

Included Equipment

Sound Sensor (UI-5101)

Mini Microphone (UI-5102)

8-Pin DIN Extension Cable (UI-5218)

Sensor Mounting Rod

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