A. 3528 lamp bead, 30 / m, can take 25 meters. B. 3528 lamp bead, 60 / m, with 12.5 m. C. 5050 lamp bead, 30 / m, with 8.5 m. D. 5050 lamp bead, 60 / m, with 4.2 m.  60 w constant voltage LED driver power constant voltage LED driver Product features: Small volume, light weight Being stable linear constant voltage output With isolation transformer, more safety to human body Adopt international leading IC design, stable quality Do more than 50000 hr service life Do have the perfect over-current, over voltage, short circuit, over temperature and over power protection function The product USES the import terminal, convenient installation Nurture can fight lightning more than 4 kv Do moistureproof and dustproof features Can be in to 40 ℃, + 65 ℃ environment stable job Do comply with RoHS standard   Second, the input parameters * the input voltage:100-240 VAC, 50/60 hz   Third, output parameters * output power: 60 wMAX   Four, the size of the reference * 114 * 45 * 30 mm   Fifth, product certification * products through the European CE, EMC and other safety certification   Six, use the product * the company's products are widely used in LED photoelectric products, ceiling lamp, absorb dome light, the ball bubble lamp, shoot the light, buried lamp, fluorescent lamp, desk lamp, etc.   Seven, product quality assurance * according to the national 3 packets of policy, warranty for three years.Eight, product packaging* a single product for box, each box 100 PCS, 18 kg weight, a single weight 165 grams.