Zigbang SHP P52 Fire Rated Door Digital Lock and Zigbang SHP A21 Digital Gate Lock BundleTypes of access: PIN RFID Fingerprint Wi Fi Emergency key Functions Crackproof UV Finish applied on the touch screen to prevent damage. Away mode Ensure nobody to access the lock when you are leaving the house. Privacy mode Access will be denied from outside the house. Volume control Adjust your volume according to your preference. Prank prevention Alarm will go off if someone tries to enter using incorrect authentication for consecutive times. Low