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