Classification Information
Sonar; Electrical annunciators; Sound alarms; Swimming pool alarms; Flashing safety lights; Hand-held electronic units used to identify bird species and bird songs; Sound projectors
Electrical and Scientific ApparatusSonar; Electrical annunciators; Sound alarms; Swimming pool alarms; Flashing safety lights; Hand-held electronic units used to identify bird species and bird songs; Sound projectors
Electrical and Scientific Apparatus