An M4 has to follow a C4 module.
The M4 is differentiated from the C4 by a less heavily populated brown PCB and has two yellow cables allowing hardwired connection to a C4 Module.
- 4 Buttons
- Illuminated name display panels
- Hardwired to C4 Module
- Anodised Aluminium
- Dimensions (approx): 90mm x 90mm x 45mm
- Supplied with Name Tags