LED switching power supply constant voltage $ 9.82 Widely used in industrial automation, LED display, communication, etc. Protection: short circuit protection, overload protection, overvoltage protection. Input voltage: 110 V / 220 V1550/60Hz Output voltage: DC12V / 24 V / 5 V Shell material: metal shell/aluminum base. Working temperature: 0~40 degrees Celsius Storage temperature: -20~60 degrees Celsius Ambient humidity: 0~95%, no condensation The power supply "not" comes with installation instructions, wiring cables, power switch or screws. It is strongly recommended that a qualified electrician perform professional installation. Efficient low temperature Function: Overvoltage protection, short circuit protection and overload protection The voltage output is constant. Make sure the power supply is stable With anti-interference function to ensure long life of LED lights