... battery needed);Environmental temperature:-20~50Operating frequency:13.56MHz,Fast data transfer:106KBPS;Data retention of 10 years; Write endurance 100,000 ... will keep to remind the user by buzzer. The Access Function--when necessary, we can set four kinds of ... locks which are room-access, floor-access, building-access, and general access. Technical Parameter:Power Supply: DC 6V.The ...