The kit laid out on white: one 4-inch display module shown large with its segments lit red, three more with their segments unlit and grey, the teal box printed 4-INCH SEVEN SEGMENT LED DISPLAY, two strips of male pin header and eight black female sockets in two sizes.

You have thisseg4

4″ 7-Segment LED Display with 74HC595

A 100 mm digit with its own shift register on the back. Five wires from your board, a 12 V supply for the segments, and modules that plug into each other to make longer numbers.

Digit: 4inch
Segments: 12V, its own supply
Logic: 3.3 / 5V
Wires: 5incl. GND

Start here · 01 Seven segments and a dot The reference

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The whole handbook11 articles · 50 min DatasheetPDF · ti.com Pinout and specsThe pin table, and the questions people ask first

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4″ 7-Segment LED Display with 74HC595

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4″ 7-Segment LED Display with 74HC595

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Email us or reply to your order, and quote seg4 — that identifies the product. If something is missing from the bag, your order is the record of what shipped.

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Point a phone camera at the code and this page opens there. It is the same address as the one printed on your box, so it is also what to show someone you are passing the board to.