Interface unit(coputerised data acquisition system via usb)

Interface unit(coputerised data acquisition system via usb) .
Data acquisition unit with 8 analogue channels. Equipped with 2 relays and 2 analogue outputs. It must be possible to acquire continuous signals or slowly variable up to 100Hz.
Description: robust metal construction, USB interface for maximum PC compatibility
Clear interface for easy connection understanding
Technical Features
Direct power supply from USB, total consumption less than 120mA.
Nr. 2 relay outputs.
Nr. 2 analogue outputs, with:                  12 bit D/A converter       Output levels: -10/+10 V          
Nr. 8 analogue inputs, with:                  Input levels: -10/+10 V        High impedance input amplifier: > 1MOhm
                 12 bit A/D converter                  zero autotuning
                 Max sample rate: 10 kHz
Driver for Windows 2000,  XP, Vista, 7
The unit must be supplied with a manual in English language.