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, and can manage 200 indoor monitors at most Support duress alarm, tamper alarm, and door sensor timeout alarm