1、This is a dedicated LED circuit, security monitoring system, security cameras, IP cameras, 3D printers and other equipment or system power supply unit. 2、Safety design, can effectively short circuit protection, overload protection, automatic voltage switching. 3、Adjust voltage and current output to work effectively on LED lighting and LED drivers. 4、The light will not flicker, can extend the service life of LED. 5、LED lighting with adjustable light function can achieve a full range of current output. Features: This is a dedicated LED circuit, security monitoring system, security cameras, IP cameras, 3D printers and other equipment or system power supply unit. Safety design, can effectively short circuit protection, overload protection, automatic voltage switching. Adjust voltage and current output to work effectively on LED lighting and LED drivers. The light will not flicker, can extend the service life of LED. LED lighting with adjustable light function can achieve a full range of current output. You can control the voltage output according to different power conditions. Specifications: Material: Metal Size: Approx. 20*11*5cm/7.87*4.33*1.97inch Color: As is shown on the photo Model: S-250-12 Type: AC/DC Power Supply Modulation system: Pulse width modulation Transistor connection mode: Half bridge Input Power: 110-220V Output Power: 250W Output Voltage: 12V Work efficiency: 85% Connect L,N: AC INPUT GND: Dc power output''-'' V: Dc power output''+'' +V/ADJ: Adjust output voltage Safety compliance: CCC/FCC/CE Working Temperature: 0-40℃ Storage Temperature: -20-60℃ Ambient humidity: 0-95%Non-condensate Package list: 1 x Power Supply Note: The power supply is 100% full, but part of the power will be loss when wiring. Therefore, it is recommended to use 80%~85% of the power to avoid the load! The input voltage shall be connected within the specified working range It is strictly prohibited to use in high temperature environment, and the power supply should have good cooling space and environment Do not install the power supply on combustible materials. Keep it away from gas stations or places where smoking is prohibited Cooling by free air convection is not recommended in bathrooms.