How to identify a Speaker/Mic with the product number 5150/500, 5150/510, 1128/500 or 1128/510

This article explains how to identify a Speaker/Mic with the product numbers 5150/500, 5150/510,1128/500 or 1128/510.

5150/50 Urmet speaker/mic unit 

Identification

Can be identified by its 4 terminals: 

• 1
• 2
• +
• -

Replacement

5150/50 Urmet speaker/mic unit is replaced by part ref 1128/500.

5150/500 Urmet speaker/mic unit

Identification

Can be identified by its 5 terminals: 

• 1
• 1A
• 2
• +
• -

Replacement 

5150/500 Urmet speaker/mic unit is replaced by part ref 1128/500.

5150/510 Urmet speaker/mic unit 

Identification

Can be identified by its 6 terminals: 

• 1
• 1A
• 2
• -/~
• ~
• PS

Replacement 

5150/510 Urmet speaker/mic unit is replaced by part ref 1128/510.