Indoor illuminance card with background

Who it’s for

Facility managers, building automation engineers, and workplace managers ask “can I see the lighting status for every monitored zone at a glance, without reading individual numbers?” The background-color variant is designed for building management dashboards where a single colored card must communicate lighting adequacy from across a control room.

What it does

A sensor reporting illuminance = 350 lx displays the reading on a card whose entire background fills with the band color: dark gray for Dim (0–100 lx), orange for Low (100–300 lx), dark orange for Moderate (300–500 lx), and red for Bright (above 500 lx).

• Full-card background color makes illuminance status readable across a room without reading the number
• Live illuminance reading in lx
• Shows one sensor’s reading per widget; tile multiple widgets to monitor all zones at a glance

How to set up

Data keys

Key	Role	Type	Description
illuminance	Main value	Timeseries	Illuminance in lx; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled Illuminance, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

Value ranges

Range (lx)	Level	Color
0–100	Dim	Dark Gray
100–300	Low	Orange
300–500	Moderate	Dark Orange
500+	Bright	Red

How to customize

• To change the band thresholds — open the widget settings and adjust the boundaries to match the lighting standard for your space.
• To change the background colors — edit the background color for each level in the widget settings.
• To rename the units label — change the Units field in the widget settings if needed.

Tips

• On a facilities management display with one card per zone, the background color lets the duty manager spot a lamp failure (dark gray) or direct sunlight glare risk (red) without scanning individual lux values.
• Use consistent band colors across all environment widgets for the space’s status at a glance.
• For smart office automation, pair this card with occupancy and HVAC widgets so operators can see whether lighting, temperature, and CO2 are all in the correct state for occupied hours.