1. At this stage the main source of luminous letters to the conventional with input voltage DC12V. Three LEDS , five LEDS , six LEDS module is relatively, constant voltage output of the switching in DC12V. Note If the LED light source module is not installed when the power switch, LED light source module should not be Access to AC 220V power,Otherwise the LED module will burn out because the voltage is too high.
2,To avoid long-term work at full capacity switching power supply, switching power supply and LED load power should be 1:0.8,,Life of the product in accordance with this configuration will be more safe and sustainable.
3. If the module is over 25, you should first separate connection, and then connected to the quality greater than 1.5 mm2 copper wire in parallel with the luminous letter box, power cord length should be as short as possible, such as more than 3 meters must be appropriate to increase the diameter, the module end of the unused connection in order to avoid short circuit must cut the paste must be firmly and, if necessary, with self-tapping screws are not waterproof series of outdoor use, groove letter waterproofing measures must be done;

LED Module
http://www.ledflexlighting.com/