ACM-508S Semiconductor Fingerprint Glass Door Lock

• Multiple unlock mode: Fingerprint, Password, Card and Combination Mode.
• High sensitive full touch keypad with backlight, easy use even in the darkness.
• Easy operation to humanity and clear voice guidance.
• Support DIY installation just with a screwdriver, no need any take hole.
• Optional Remote control function.
• Doorbell built-in offers every convenience for the visitor.
• Powered by 4pcs AA Battery and with low battery alarm.
• Support external emergency battery input.