... low temperature rise, low calorific value. 2. High stability, d 1.High efficiency, waterproof led power supply 2.Input voltage:27-72VDC 3. Certification ... design, low temperature rise, low calorific value. 2. High stability, drive stable work, output current constant, no drift. 3. High ... circuit. 4. Has the maximum output power limiting function, to avoid the impact of the LED.5. Long use life design, ...