# kol-meter ## Properties | Property | Attribute | Description | Type | Default | | --------------------- | -------------- | ------------------------------------------------------------------------------------------------------------------ | ---------------------------- | -------------- | | `_high` | `_high` | Defines the upper boundary of the high range. | `number \| undefined` | `undefined` | | `_label` _(required)_ | `_label` | Defines the visible or semantic label of the component (e.g. aria-label, label, headline, caption, summary, etc.). | `string` | `undefined` | | `_low` | `_low` | Defines the lower boundary of the low range. | `number \| undefined` | `undefined` | | `_max` _(required)_ | `_max` | Defines the maximum value of the element. | `number` | `undefined` | | `_min` | `_min` | Defines the minimum value of the element. | `number \| undefined` | `undefined` | | `_optimum` | `_optimum` | Defines the optimal value of the element. | `number \| undefined` | `undefined` | | `_orientation` | `_orientation` | Defines whether the meter bar is displayed horizontally or vertically. | `"horizontal" \| "vertical"` | `'horizontal'` | | `_unit` | `_unit` | Defines the unit of the step values (not shown). | `string` | `'%'` | | `_value` _(required)_ | `_value` | Defines the value of the element. | `number` | `undefined` | ----------------------------------------------