# Gauge card
> Canonical HTML: https://screenrig.ai/docs/cards/gauge/
One to six readings as radial, semicircle, speedometer, linear, bullet, tank or battery gauges, with qualitative bands, a target and a scale; the needle or fill eases to each new value.
Category: Operations. Tags: Charts and gauges, Numbers and metrics, Offices and workplaces, Factories and warehouses.
## Previews
Canvas
Corner
Chip
## Views and forms
Views: canvas, corner, chip. Canvas forms: landscape, portrait, square, strip.
[Card views, themes and publishing](/docs/cards/). [Browse the gallery](/apps/#cards).
## Data and privacy
This card uses its configured properties and live card data.
## Properties
For theme, background, accent and position, see [Common properties](/docs/cards/#common-properties).
Set static properties in `params`. Bind `data` to a project card data key for live values; that document holds only dynamic properties. Without a data key, put the complete configuration in `params`. Nested rows describe the contents of their parent property.
### Static properties
| Name | Type | Default | Values and limits | Description |
| --- | --- | --- | --- | --- |
| `title` | string | `""` | maxLength: `40` | A heading above the gauges. |
| `style` | string | `"radial"` | `"radial"`, `"semicircle"`, `"speedometer"`, `"linear"`, `"bullet"`, `"tank"`, `"battery"` | radial: a 270 degree dial. semicircle: a half dial. speedometer: a needle over a scale. linear: a bar. bullet: bands behind a bar with a target notch. tank: a vertical tank. battery: ten cells and a terminal. |
| `showBands` | boolean | `true` | | Draw each reading's qualitative bands (a ring inside a dial). |
| `intervalSeconds` | integer | `6` | minimum: `3`; maximum: `60` | How long the corner and chip show each reading before the next. |
### Dynamic properties
| Name | Type | Default | Values and limits | Description |
| --- | --- | --- | --- | --- |
| `metrics` | array | `[{"label":"Living room","value":21.5,"unit":"°C","min":10,"max":30,"decimals":1,"target":22,"bands":[{"to":18,"tone":"cool","label":"Cool"},{"to":24,"tone":"success","label":"Comfortable"},{"to":30,"tone":"warning","label":"Warm"}],"icon":"thermometer"},{"label":"Humidity","value":58,"unit":"%","min":0,"max":100,"bands":[{"to":30,"tone":"warning","label":"Dry"},{"to":60,"tone":"success","label":"Comfortable"},{"to":100,"tone":"cool","label":"Humid"}],"icon":"humidity"},{"label":"Air quality","value":780,"unit":"ppm","min":400,"max":2000,"bands":[{"to":800,"tone":"success","label":"Fresh"},{"to":1200,"tone":"warning","label":"Stuffy"},{"to":2000,"tone":"danger","label":"Poor"}],"icon":"air-vent"}]` | minItems: `0`; maxItems: `6` | One to six readings. Each has a scale (min, max), qualitative bands (to: the band's upper end; tone: success, warning, danger, accent, cool, warm or muted; label: its name) and an optional target. |
| `metrics[].label` | string | | maxLength: `40`; Required | |
| `metrics[].value` | number, null | | | Without a value the gauge draws as a ghost with its bands and says it is waiting. |
| `metrics[].unit` | string | `""` | maxLength: `8` | |
| `metrics[].prefix` | string | `""` | maxLength: `4` | |
| `metrics[].min` | number | `0` | | |
| `metrics[].max` | number | `100` | | |
| `metrics[].decimals` | integer | `0` | minimum: `0`; maximum: `3` | |
| `metrics[].target` | number, null | `null` | | |
| `metrics[].bands` | array | `[]` | maxItems: `6` | |
| `metrics[].bands[].to` | number | | Required | |
| `metrics[].bands[].tone` | string | `"accent"` | `"success"`, `"warning"`, `"danger"`, `"accent"`, `"cool"`, `"warm"`, `"muted"` | |
| `metrics[].bands[].label` | string | `""` | maxLength: `16` | |
| `metrics[].charging` | boolean | `false` | | A battery shows a charging bolt. |
| `metrics[].icon` | null, string | `null` | `null`, `"activity-01"`, `"air-vent"`, `"airplane-01"`, `"alert-01"`, `"alert-02"`, `"american-football"`, `"analytics-up"`, `"apple"`, `"arrow-down-01"`, `"arrow-down-right-01"`, `"arrow-up-01"`, `"arrow-up-right-01"`, `"award-01"`, `"baseball"`, `"basketball-01"`, `"battery-full"`, `"bell-ring"`, `"bicycle"`, `"birthday-cake"`, `"bitcoin"`, `"bus-01"`, `"calendar-03"`, `"calendar-04"`, `"calendar-add-01"`, `"calendar-check"`, `"call-02"`, `"camera-01"`, `"cancel-circle"`, `"car-01"`, `"champion"`, `"chart-decrease"`, `"chart-increase"`, `"checkmark-circle-02"`, `"clock-01"`, `"clock-02"`, `"cloud"`, `"cloud-angled-rain"`, `"cloud-angled-zap"`, `"cloud-big-rain"`, `"cloud-drizzle"`, `"cloud-fog"`, `"cloud-hailstone"`, `"cloud-snow"`, `"coffee-01"`, `"coffee-02"`, `"contact-01"`, `"container-truck-01"`, `"cricket-bat"`, `"crown"`, `"delivery-truck-01"`, `"dices"`, `"discord"`, `"discount-tag-01"`, `"dollar-02"`, `"door-closed-locked"`, `"door-open"`, `"drink"`, `"droplet"`, `"ethereum"`, `"euro"`, `"exchange-01"`, `"facebook-01"`, `"factory"`, `"fast-wind"`, `"favourite"`, `"ferry-boat"`, `"fire"`, `"fire-02"`, `"first-aid-kit"`, `"flag-01"`, `"flag-02"`, `"flash"`, `"flower-01"`, `"football"`, `"gauge"`, `"gift"`, `"git-branch"`, `"globe-02"`, `"google"`, `"hand-prayer"`, `"heart"`, `"help-circle"`, `"home-01"`, `"hourglass"`, `"humidity"`, `"ice-hockey"`, `"information-circle"`, `"instagram"`, `"lamp-01"`, `"lantern"`, `"leaf-01"`, `"leaf-02"`, `"lightbulb"`, `"link-01"`, `"linkedin-01"`, `"litecoin"`, `"location-01"`, `"location-04"`, `"mail-01"`, `"medal-first-place"`, `"medical-mask"`, `"meeting-room"`, `"megaphone-01"`, `"message-01"`, `"money-exchange-02"`, `"moon-02"`, `"moon-cloud"`, `"moon-star"`, `"music-note-01"`, `"navigation-03"`, `"new-releases"`, `"new-twitter"`, `"news"`, `"news-01"`, `"noodles"`, `"package-delivered"`, `"parking-area-square"`, `"party"`, `"party-popper"`, `"pause-circle"`, `"percent-circle"`, `"pinterest"`, `"pizza-01"`, `"play-circle"`, `"play-store"`, `"podium"`, `"pound"`, `"pumpkin"`, `"qr-code"`, `"qr-code-01"`, `"queue-01"`, `"quote-down"`, `"quote-up"`, `"ranking"`, `"restaurant-01"`, `"rocket-01"`, `"rss"`, `"running-shoes"`, `"sale-tag-01"`, `"security-check"`, `"shop-sign"`, `"shopping-bag-01"`, `"siren"`, `"smart-phone-01"`, `"snapchat"`, `"snowflake"`, `"sparkles"`, `"spotify"`, `"star"`, `"star-half"`, `"star-off"`, `"stop-circle"`, `"store-01"`, `"sun-03"`, `"sun-cloud-02"`, `"sunrise"`, `"sunset"`, `"swimming"`, `"tag-01"`, `"target-02"`, `"temperature"`, `"tennis-ball"`, `"thermometer"`, `"thermometer-cold"`, `"thermometer-warm"`, `"threads"`, `"ticket-01"`, `"tiktok"`, `"time-quarter-pass"`, `"timer-01"`, `"tornado-02"`, `"train-01"`, `"tram"`, `"trophy"`, `"tropical-storm"`, `"tsunami"`, `"user-02"`, `"user-group"`, `"user-love-01"`, `"vegetarian-food"`, `"volleyball"`, `"volume-high"`, `"vote"`, `"walking"`, `"warehouse"`, `"waves"`, `"whatsapp"`, `"wheat-off"`, `"wifi-01"`, `"wifi-full-signal"`, `"wifi-lock"`, `"wrench-01"`, `"yen"`, `"youtube"` | |
| `updatedAt` | string, null | `null` | | ISO 8601 time of the readings. |
## Canvas example
Add this item to a playlist page’s `primitives`. [Publish the playlist and assign a screen](/docs/cards/#publish-a-card-canvas).
```json
{
"id": "gauge",
"primitive": "card",
"card": "gauge",
"major": 1,
"params": {
"theme": "neomustard"
},
"rect": {
"x": 0,
"y": 0,
"width": 1920,
"height": 1080
},
"layer": 0,
"content_fit": "fill",
"data": "gauge-main"
}
```
## Write live data
Create this document before showing the card, then replace it to update the screen without republishing. Use the same project as the playlist. Supply your API authorization through the environment; see [API authentication](/docs/authentication/).
```console
curl --request PUT "https://api.screenrig.ai/api/card-data/gauge-main" \
--header "Authorization: Bearer $SCREENRIG_TOKEN" \
--header "ScreenRig-Project: $SCREENRIG_PROJECT" \
--header "Content-Type: application/json" \
--data '{"document":{"metrics":[{"label":"Living room","value":21.5,"unit":"°C","min":10,"max":30,"decimals":1,"target":22,"bands":[{"to":18,"tone":"cool","label":"Cool"},{"to":24,"tone":"success","label":"Comfortable"},{"to":30,"tone":"warning","label":"Warm"}],"icon":"thermometer"},{"label":"Humidity","value":58,"unit":"%","min":0,"max":100,"bands":[{"to":30,"tone":"warning","label":"Dry"},{"to":60,"tone":"success","label":"Comfortable"},{"to":100,"tone":"cool","label":"Humid"}],"icon":"humidity"},{"label":"Air quality","value":780,"unit":"ppm","min":400,"max":2000,"bands":[{"to":800,"tone":"success","label":"Fresh"},{"to":1200,"tone":"warning","label":"Stuffy"},{"to":2000,"tone":"danger","label":"Poor"}],"icon":"air-vent"}],"updatedAt":null}}'
```