# Radio Communication LED Indicator

The MTRwrench 85 is equipped with a LED indicator that notifies the operator on the wrench's wireless communication status.

The Radio Communication LED behaves as follows:

LED Behavior | LED Status | Meaning
--- | --- | ---
OFF |  | Wireless communication off.
Breathing |  | Online: wireless communication on, wrench linked in coverage
Blinking |  | Offline: wireless communication on, wrench linked out of coverage
| OFF | ON |
Slow Blinking |  | Wrench not in use: wireless communication on, wrench not linked
| Long OFF | Short ON |