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LCN

what is difference between LCN SEM7820 and SEM7830?

Resolution: The SEM7820 is a floor model magnet, while the SEM7830 is surface wall mounted magnet. See here for LCN Fire Life and Safety catalog information, which includes more specific details on the S...:

For surface wiring with the SEM7830 magnet; what surface metal raceway is used?

Resolution: Surface Metal Raceways are commonly called Wiremold and can be found at a hardware store. This is used to run wires in many applications, such as in schools. For Surface Metal Race...:

What was the LCN SEM7870 magnet?

Resolution: Only available replacement part is the LCN SEM7820-825 armature. The SEM7820-516 magnet coil might be able to use but may not be a direct replacement. :