WIRELESS INTERPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a wireless interphone system by which a user anywhere indoor can make an emergency notice to an outdoor device. SOLUTION: In the wireless interphone system configured with a combination of a wireless repeater 4 that is connected to a doorphone slave unit 2 by a signal line L, a wireless interphone 1 and a wireless call unit 3, the wireless repeater 4 records a prescribed emergency notice tone in advance and allows the doorphone slave unit 2 to output the emergency notice tone when receiving a wireless signal denoting an instruction to output the emergency notice tone from the wireless interphone 1 or a specific wireless call unit 3.