KV-E8X is an eight (8) input device made by Keyence. The KV-E8X has a minimum ON voltage of nineteen (19)V. The maximum OFF current of the KV-E8X is two(2)mA. The KV-E8X by Keyence has an input time constant (switchable between two (2) levels by using special auxiliary relays 2609 to 2612) with a ten (10) ms ± twenty percent (20%), ten(10) µs ± twenty(20%) for both rising (OFF to ON) and falling (ON to OFF) edges. The KV-E8X has a vibration resistance and a continuous vibration frequency of ten (10) to fifty-seven (57) Hz. The KV-E8X in twenty-four (24) V mode has an input maximum rating of twenty-six point four (26.4) VDC. The KV-E8X has an input voltage of twenty-four (24) VDC, five-point three (5.3) mA. The KV-E8X has an impedance of four point three (4.3) kΩ. The Keyence KV-E8X also has four (4) common inputs. The KV-E8X has seven (7) screw ports along the top and the bottom of the device. The KV-E8X is labeled in purple writing along the top it reads C1 zero through three (C1 0-3) than V1 and V2, with an IN port on the top left of the device. Along the bottom of the device is labeled C2 four through seven (4-7) V3 and V4 with an IN port on the bottom left of the device. The Keyence KV-E8X also has a black and white wiring harness on the left, in order to easily connect to another device.