The Velleman MK124 Rolling Message Display Kit lets you create your own moving message with 35 brilliant LEDs to light up each character of your custom message, which can be up to 16 characters.
Built-in message editor is simple to use. Press "set" to change a character, then use the "up/down" key to select the character and end with the "<" key. Includes a standby/run mode to restart the display. Display standby function: press "Stby".
Specifications:
- power supply: 9-12V DC adapter or car battery
- current consumption: 20mA max. / 4mA standby
- backup battery: 9V block type 6LR61/ 6F22
- dimensions: 1.8/3.5 x 2.6"