Details: Alpha Communication LI404B Flashing Strobe for Hearing Impaired

The Alpha Communications / TekTone LI404B strobe is a high-intensity remote visual signaling device for use with Alpha Communications IA543, PK543, PK543A, PK205, or PK292A amplifier apartment systems, and optionally with the Alpha Communications IA502 or PK502B transfer relay(s).The unit is primarily for use in locations where hearing-impaired persons require supplemental call notification, but can be used anywhere that a visual indication of an incoming call is desired. The bright strobe light flashes once a second for approximately 15-20 seconds when an incoming call is detected.