intercom

hello, i have a faulty bpt yc/200 faulty handset, i just moved to a building and i figured out my intercom is not working propertly, when someone buzz my aparment number my handset doesnt buzz at all (im newbie but i must tell i didnt see any speaker inside my intercom handset, ill add you some...

Hi Similar to my fire alarm post I'm also after any suggestions for intercom handsets that can be switched to silent but that have a strobe light built in (or a way of attaching one)... again for home recording studio. Thanks