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U451 Specifications
Board Size: 1.5 inches (38.1 mm) long and 0.75 inches (19.1 mm) wide.
Computer Interface: USB
USB Cable Length: 36 inches (914 mm).
USB Connection type: Removable cable.
USB Power Type: Bus powered, uses the 5V provided by the USB interface.
Specified USB allowed current draw: 100 mA standard, total.
Bandwidth: 800 bytes per second as a HID device.
USB Bus Speed: 1.5 Mbits⁄s. (Low speed)
USB Driver: HID, part of the operating system.
Device Interface: 2 form-C relays (125V - 10A), 6 darlington outputs (500 mA), 8 CMOS lines selectable as inputs⁄outputs. Because of trace width, currents should be limited to 2 amps.
Controller Device: Cypress CY7C63743.
Board Layout:
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