5mm LED 16 dot matrix module Aluminium alloy frame Build in power switch ( 5v 4A DC) Four- lines integerated display QUICK SPECIFICATION 5mm LED 16 dot matrix module Build in power switch ( 5v 4A DC) Four- lines integerated display
5mm LED 16 dot matrix module Aluminium alloy frame Build in power switch ( 5v 4A DC) Four- lines integerated display
