2-Digit LED Digital Display + Bar Graph Combination Display DeviceIt visually shows "level/status changes" (e.g., remaining battery power, signal strength, temperature range) via multi-segment color LEDs (including green, yellow, and red in the diagram).
Applicable Scenarios:
Heaters/humidifiers: Display of "power level + operating status"
Small detectors: Display of "measurement value + warning level"
Bluetooth speakers: Display of "volume value + signal strength"