... high-frequency interference ripple of linear DC power supply, It is practical, Simple interface, ... 0~30sec.Aptional Accessories: Backcup Battery, 12V/7HStandard Designe: Steel material, PaintedFuse: 10A ... .5-4A. Stable, with high efficiency.Suitable For : Access control, Electric lockWeight: 2. ... Access Control Panel ,electric bolt and electric strike are 2 years, exit button, bracket , and power supply ...