The ZK-5KX is capable of both stepping up and stepping down voltage, ensuring a stable output even if the input fluctuates. 6.0V to 36V DC Output Voltage: 0.6V to 36V DC (fully adjustable)
Default 4.8V. The module turns off if the input voltage drops below this. zk5kx manual
The ZK5KX can operate offline with up to 50,000 transactions stored in flash memory. When network is restored, it will auto-sync to the central server (via TCP/IP or USB flash drive). To upload logs: The ZK-5KX is capable of both stepping up