Description: The USBNDSPY is a 4 digit RED USB HID 7 Segment LED Displays. The device is self powered and controlled via the USB port. Data can be entered in three modes; raw, hex and ascii. Device has programmable flash rate and optional piezo buzzer is available. Simple plug and play technology. Digit height is 0.560". PCB dimensions are 2" by 1.5". Includes 2 Meter USB Cable. Unique serial number in each device. . LED color: RED Applications: Instrumentation, WebSite Counters, POS, Equipment, Process Counters.