These Loudspeaker Single and Pair are designed for use in laboratories to convert signals into sound, with different sizes and features including extension capabilities and pair packaging. 

A. Large / 75mm Diameter: Suitable for general laboratory use and converting signals to sound. It is also useful as an extension speaker.

B. Large / 150mm Diameter: Compact and sturdy unit perfect for general laboratory use. It can be used for converting signals to sound and as an extension speaker. 

C. Small / Pair / 56mm Diameter: Suitable for converting signals to sound, they come in pairs and include 4mm socket terminals and connecting cables. 

*in housing

Brand: IEC