The ZKTeco K40 Biometric Attendance Machine can function as an attendance and access control system. It is one of the most economical, low-cost series for small offices and shops. K40 has become one of ZKTeco’s most popular devices. K40 has ZKTeco’s latest firmware with a user-friendly UI and flexible user privilege settings. The new firmware optimizes hardware and software. This device features TCP/IP, a USB host, Built-in battery.Experience the convenience and security of the Online Biometric Attendance Device