... driver supply3.tube driver supply 20w 4.daylight led driver 20w isolated1.20w ,tube led power supply 2.Output voltage:30-55VDC 2.Dimension ... rise, low calorific value. 2. High stability, drive stable work, output current constant, no drift. 3. High security, suitable for high ... , over-current, overheat protective circuit. 4. Has the maximum output power limiting function, to avoid the impact of the LED ...