... *5, Constant voltage output, assume stable power supply for LED lightings to reach long lifetime and reduce led light decay.*6, Input Voltage: AC110-250V Output Voltage: DC24V ... , Working tempreture: -25 to 45 degreesize:170*120*93mm 12V/24V/48V/500W switch mode power supply,size;170*120*93mm,led driver,led power supply;bigger one