Emergency power supply: when the voltage is lower than 2.5V, there will be a low-voltage alarm function, external battery box, power adapter, etc.
High-frequency card: MF1, 13.56MHz.
Cards of different shapes can be provided: wristbands, tags, cards, etc.
Support custom functions: automatic unlocking at regular time, the mobile phone displays the locker number, one card can only work on one lock at the same time, etc.
Power supply mode: powered by 1*3V CR123A battery.
A variety of working modes are available: suitable for applications in different places.