This Measurement Computing USB-1024LS is a 24-bit digital I/O device offered in new, open-box condition. It provides reliable digital input and output connectivity for data acquisition, control systems, and laboratory testing applications. The device interfaces via USB, making it suitable for engineers, technicians, and developers integrating sensors, switches, or actuators with a computer. Free shipping is included. As the original packaging has been opened, the item is unused and should function as new. Check the listing for full details on included accessories and software. Measurement Computing USB-1024LS 24 Bit Digital I/O Device, NEW. Condition: New – Open box. Listed at 89.96 USD. The device is designed to emulate 82C55 mode 0. The USB-1024LS provides a 32-bit event counter to count TTL pulses. The counter accepts inputs up to 1 MHz. This device is USB-powered and requires no external power.