The light punching diameter up to 9MM-12mm, suitable for LOGO, advertising signs, exposed luminous characters, the light space can be chosen according to the floors' hight, the center distance between lights is generally 2-5CM. this kind of Led pixel light has low-power, long lifespan, also safety and environmental protection, the average quantity is about 250--400 leds per square. Chip: San.an Packing specification: 50-60 leds per strip, plastic injection using high weatherability PVC material, high flexibility and easy installation, high-strength wear-resisting deformation, high temperature resistance Working voltage: DC5V DC12V, voltage parallel with alternative splicing Operating current: 15-20mA Size:9MM,12mm Beam angle:180 degree Protection Grade:IP68 Rated power: 0.1W Lifespan:50000H Color:R/G/Y/B/W/WW/O/ we can do any color you want. Method of making LED channel letter step: 1, LED outdoor sign making tools: soldering iron, solder, drill, glue gun, screwdriver, etc. 2, LED outdoor sign making needs other materials: punching holes in metal (sign Tin punching holes), wires, power supply, controller of the corresponding specifications. Exposure voltage for LED string lights DC5V, please use the corresponding specifications of the power supply. 3, punching: aperture (9mm/12mm) according to the specifications of the light string set, spacing according to the outdoor installation depending on the height and cost, LED spacing from the Center are: 20-50mm, spaced smaller makes higher brightness and higher costs. 4,Insert lamp: clean up the pre-drilled holes, one by one (full-color exposure lamp installation please follow the wiring diagram carefully so as not to affect the effect changes). 5,Wiring: there are already finishes and wired waterproof LED light string, each string has reserved threads (full-color waterproof led light strings' anode and cathode, clock data, should be noted clearly), It is suggested to place the power supply in the power distribution box. 6, Aging test: put all the LEDs, checking and get rid of the bad ones, then keeping 48 hours aging test. If individual lamps do not light up, check the lights, or line, if still does not light, replace the LED lamp.