Error code 4008 means the Square D ID is not valid for the device type. Check the version of SMS. The 4008 error could be a result of SMS being an older version that does not support the PM870 meter. The PM870 meter will only communicate with SMS v4.0.2 or newer.
Legacy KB System (APS) Data: RESL199624 V1.0, Originally authored by MaTh on 08/14/2009, Last Edited by MaTh on 08/14/2009
Related ranges: PM800 series, System Manager 4.0