High, low, the switch three control methods, overcurrent, overvoltage, short circuit protection. Its anti-interference ability, stable and reliable. The scope of application of the power applied to a variety of building intercom , access a variety of import and export controls, particularly applicable to a variety of electric locking drive. Can reduce the load of access controller, save wiring to reduce the hidden trouble. Features: 1. External connection interface, convenient connection. 2. Provide 5A current output. 3. Battery anti-polarity protection (only fuse is burnt when the battery is connected backwards, and the power will not be damaged). 5. New upgrade power adjustable design, adjustable time for 0-15 seconds. 6. 50W high power transformer. 7. There is remote control module lock slot in the access control system. Specification: Condition: Brand New Material: Metal Size: Approx. 212 * 168 * 70 mm / 8.3 * 6.6 * 2.7 inch Output Current: 5A Delay Range: 0-15s Power: 50W Weight: Approx. 1041 g Package list: 1 x Power Supply 1 x Chinese and English Instructions Note: 1.Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly diff erent from the real object. Please take the real one as standard. . 3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.