... *40dots SMD leds, plastic casingSize:30*5*1cmPower: DC12V±10%Display color: blue, red, green, white, amberOperating electricity: ≤7. ... use onlyApplications:Store or car advertising media, car status information display, alarm etc.Function:Can save 9 messages, each message ... confirmation.Step 3: Press the SPD button. The display will show the scrolling speed for the message: SP:1Note: SP indicates ...