Feature: 1. LOCK AND KEYS: Each closed circuit power supply box is equipped with independent lock and keys, which can prevent rain, theft and electric shock. 2. GOOD COOLING: Double column vent power box with multiple cooling vents on both sides to improve the heat dissipation of the power supply. 3. SAFE OPERATING: When the double cap core fuse is started, the fuse damage will not affect the performance of other output lines, safe and reliable. 4. SPECIFICATIONS: The closed circuit TV power supply is 4 channel design, with overload and overvoltage protection to ensure stable operation. 5. MULTIPLE USAGES: Used for lighting, security monitoring, 3D printing, automation equipment, power, transportation, network communication, etc. Specification: Item Type: CCTV Power Supply Ripple: 80MV Input Voltage: (AC100-120V) 110V 220V (AC220-240V) Impulse Current: 115V 20A, 230V 40A Output Voltage Accuracy: ±2% DC Voltage Adjustable Range: -5%-10% of rated output voltage Work Efficiency: 80% Leakage Current: 240VAC<1MA Overload Protection: 105-150% burping mode, automatic recovery Overvoltage Protection: 100-135% diode clamping, output cut off, automatic recovery Electromagnetic Compatibility Standard Emission: EN5022 (CISPR22) CLASS B Harmonic: EN61000-3-2,3 Electromagnetic Compatibility Standard Anti Interference: EN61000-4-2,3,4,5,6,8,11, EN55024, Class A heavy industry standard Operating Temperature Humidity: -15-70℃, 20-90%RH MTBF: ≥ 824600 hours, MIL-HDBK-217F (25℃) Starting, Rising, Holding Time: 1000MS, 30MS, 50MS. Package List: 1 x Power Supply Box2 x Keys4 x Screws4 x Accessories2 x Fuse Tubes Note: Please be careful when installing.