The M680 is compact, cost-efficient, and provides 16 additional programmable keys with built-in LEDs.
- Supported on the 6865, 6867 and 6869
- 16 programmable keys with LEDs
- Paper insert labeling
- Can be daisy chained with the M685 for a combined total of up to 3 modules
- Powered by the phone—no separate power adapter required