The 426 is a high quality ceiling mounted intercom and audio monitoring substation using a 4" speaker and condenser microphone. It is a metal full range speaker complete with speaker, microphone, baffle and necessary electronics. The 426 is ideal for audio monitoring in security applications and in hospital CAT scan or Cath Lab rooms. It appears as a standard paging speaker, and provides clear two-way intercom from a 410 master station. The 426 will operate on the GS-400 one-to-one intercom system.