If your Sensors page looks like the example below, proceed to download the manual for Rev. B.

If your Sensors page looks like the example below, proceed to download the manual for Rev. C.

If you are unable to open the browser to see what your “Sensors” web-page looks like, the label on the back of the unit will identify the model you have. If the part number is SPM-200 Rev. B., click here. If the part number designation is SPM-200 Rev. C, click here.