             '<td>' +
                                                '<span class="rc-badge ' + (device.status === 'free' ? 'rc-badge-success' : device.status === 'rented' ? 'rc-badge-warning' : 'rc-badge-secondary') + '">' +
                                                    (device.status || 'Unknown') +
                                                '</span>' +
                                            '</td>' +
                                            '<td>' +
                                   