Here you find minispectrometer for the visible range from about 200 nm to 800 nm. The USB-VIS-OEM is a low cost version with very low noise. The USB2-OEM-MMS is a readout for the ZEISS MMS spectrometer
The Zeiss MMS spectrometer is based in a NMOS line sensor, the sensor of the USB-VIS-OEM spectrometer is CMOS. The USB-VIS-OEM spectrometer can be equipped with a SMA connector. Both spectrometer provide an on-board 32 bit signal processor.