economic built in constand power supply 

·Application of led constant power supply emergency driver LED constant power supply emergency drivers are an ideal choice for applications where reliable lighting is critical, such as in hospitals, schools, and other public buildings.   Automatic shutdown of output if LED Ioad is out of range, Deep discharge protection, Short-circuit-proof battery connection, Open-circuit-proof, Polarity reversal protection for battery   Rated supply voltage 220~240VAC          4-year guarantee (battery 2-year guarantee)          For LED module with a forward voltage of 20-90VDC   Constant power output,output current self-adjustable          LiFePO4 with longer life          Build-in Emergency converter   EEC70 is SELV output voltage&nbs…