A nice little 4 digit display board with a serial driven input. Made by Nexus Machines and with an onboard MAX7219 driver IC, connection to these can be as simple as 5 wires.

The digits themselves are 14mm high and are of the HE red variety. The board can also drive a second set of matrixed LEDs as the unused 7219 pinouts a brought out onto the bottom of the PCB

The MAX7219 driver on its own sells for £7.99 so grab a bargain while stocks last.

Datasheet available on request. Part number B14SC04-R