The Edwards 5532M Adaptatone millennium remote speaker/amplifier has been designed for high-decibel system operation when connected to the 5540M central tone generator. Each speaker/amplifier operates directly from local power sources, making it possible in a single system to connect the remote speaker/amplifiers to local power sources of different voltages. Designed for either 1/2 in (13 mm) conduit or surface mounting. The 5532M-485Y6 is designed to be connected to RS485 networks, allowing full signaling communication control. The 5532MD-25AW and 5532MD-70AW are diode polarized units designed for use in applications requiring electrical supervision of signaling circuit field wiring. The 25AW utilizes a 25 vrms coupler board; the 70AW utilizes a 70 vrms coupler board. Adaptatone signaling systems are designed for industrial applications calling for high-decibel output and micro-processor reliability combined with simultaneous signal delivery over all speakers included in the system.