For full specifications, refer to Ezviz website: https://www.ezviz.com/product/hp7/46757 Specifications: 2K resolution 7 Inch Touch monitor3 Ways to open door: QR Code, Temp code, Indoor Monitor, Ezviz App, RFID Remote Door/ Gate unlock Smart human detection Built-In Doorbell with Multiple Ringtones Two way talk Include Voice Changer 2 Wire Compatible With 4 Wire system, support up to 512 gb
