is there a way to shutdown a unity using putty or an api without giving any root credentials?

HI,

i'm using a unity 480F on different locations. some of those locations are very far.

in case of a powerfailure i want to make sure that the our powerchute can put out a command to make sure that the unity's are shut down properly.

i know that for the shut down procedure the service account credentials is needed.

is there any other way to do this or is there a way to make a new account with rights to shutdown the unity but nothing more?

thanks in advance,

Osman