Dahua Technology VTO6521H

4.3 inch IPS display; screen resolution 800×480.
2MP CMOS; true WDR.
Touch button; IP65.
Operating temperature: -30°C to +60°C.
Auto light illumination reduces light pollution.
Multiple unlock modes: Password unlock, IC card unlock, and remote unlock.
Support 20,000 users and 10,000 cards.
Support full duplex; management platform, and voice call through APP.
Support SIP server.
Support duress alarm, tamper alarm, and door sensor timeout alarm.