We are a reputed name in the field of Switch Mode Power Supply. All our products are designed incorporating latest solution and are manufactured as per industry standard with constant product innovations, market knowledge and process advancement. dc-dc led driver has some Specification: Input: 9 to 14VDC Output: 21V@700mA Efficiency: ≥90% at full load & normal IP. Size: 53mm x 30mm x 12mm approx.