Material:  zinc alloy Display screen: 5.5 inch IPS full view HD screen CPU: 4core A7 1.2GHZ Storage capacity: memory: 1GB DDR3/storage: 8GB EMMC GPU：MAL400 II Operation system: LINUX Camera: Wide dynamic binocular 2 million hd camera Support live detection User capacity: 20,000 faces+20,000 cards Records: 200,000 Comparisons: 1:N, 1:1 Working Voltage: DC12V/2A Confirmation response time: <0.5s Working Temperature: -10~65℃ Humidity: 10%-90%RH, No condensation Wiegand input: one group Wiegand output: one group Dimension: 505*100*155 mm Weight: 1.8kg Face recognition ratio: 99.9%