0.28 inch Digital LED Mini Display Module DC 0-100V Voltmeter Voltage Tester LED Panel Meter 0.28" 7 Segment LED Display Board
https://www.vogueparade.com/shopping/EN/4004/1/4000308141027/028-inch-digital-led-mini-display-module-dc-0-100v-voltmeter-voltage-tester-led-panel-meter-028-7-segment-led-display-board//