specifications: 1.fingerprint sensors: optical 2. FRR(false rejection rate):<0.1% 3. FAR(false acceptance rate):<0.00001% 4.response time:0.5-1second 5. working current:<400mA 6.capicity: 75prints 7.operating humidity: 10-90% 8.operating temperature: -20centigrade-+60centigrade 9.battery: 1.5V*4 10. battery power supply supports: 3000operations 11.color:available