Danelec DM400 system consist of:
1 x Danelec, Data Acquisition Unit (DAU)	1 x Danelec, MK3 Capsule
1 x Danelec, Sensor Interface Unit (SIU)	1 x Bridge Alarm Unit (BAU)
4 x Bridge Microphone Unit - Indoor (BMU-I)	2 x Bridge Microphone Unit - Outdoor (BMU-O)

Also included are Manuals & CD, Installaton kit and Compact flash program.