A digital customer turn display unit that is ideal for use in busy shops or offices in need of displaying next customer's turn. Each time the hand-held switch is pressed, the display will count up to show the next turn and a "Ding Dong" sound will be produced twice to notify the customers. The circuit includes a reset switch and an automatic count up switch. Supply voltage: 9V DC @ 200mA. Recommended adapter: RP-9200-P.
