foreach my $probe ( 1 .. $probe_count ) {
        my $location = "$thermbase.1.3.0.$probe";
        my $temp     = "$thermbase.1.4.0.$probe";
        my $thresh   = "$thermbase.1.5.0.$probe";
        my $cond     = "$thermbase.1.6.0.$probe";
        my $result   =
          $session->get_request(
            -varbindlist => [ $location, $temp, $thresh, $cond ] );
        if ( !defined($result) ) {
            printf( "ERROR: %s.\n", $session->error );
            $session->close;
            return;
        }