Secutron’s MRM-400MP(U) Series Fire Alarm Manual Stations provide manual fire alarm activation. They are constructed of high quality, extruded aluminum and finished in red. Each station has a permanently attached MP Protocol addressable module. The model MRM-402MP (two stage) is similar to the MRM-401MP (single stage) except it contains an additional General Alarm (G.A.) N.O. switch. For safety reasons, the G.A. switch is only accessible after the handle has been pulled. A special key is supplied with each unit. The model MRM-407MP(U) is a single stage manual station with an additional N.C. switch. The Suffix “U” indicates a USA version. Addressing is done using the MIX-4090 Device 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.