The MRI-4046 Supervised Output Module is an intelligent addressable module designed to be used with a compatible fire alarm control unit, providing high rates of information exchange and fast and secure responses. The MRI-4046 Output Module controls speakers, Notification Appliances or Fire-Phones. The module is compatible with MGC FT-300A and FH-100A Fire-Phones. A supervision/busy tone “ON” is provided for an off-hook handset. The module supports class A or B: - One circuit rated 2A, 24VDC (NAC) - One circuit rated 2A 25VRMS (Speaker) - One circuit rated 0.5A 70VRMS (Speaker) - Fire Phone. An internal EOL resistor is provided for Class A operation. The module has a panel controlled LED indicator. The LED flashes during normal operation and stays ON steadily when the device is in alarm condition. The address of each module is set using the MIX-4090 programming tool. For setting the address on this device, disconnect it from the loop, or ensure that the loop to which is connected is both disconnected from the panel and shorted across the SCL+ and SLC- inputs at the device. Failing to take either of these steps may change the address programming of previously configured sensors on the loop.