411ar voltage monitor

I’ve tried 3.30 and 4.5 which says voltage 0.0v in winbox and no output from the cli.

This is with power jack or POE.

Any suggestions?

I think only the 433 has the voltage monitoring…

only RB433AH, RB333 has voltage monitor

and RB450G

http://routerboard.com/pricelist.php?showProduct=47

says the 411ar has a voltage monitor.