CEL is making a change to the MeshConnect EM357 module Part Numbers. This change is due to the 1MB Flash in the module has changed from M25P80 to M25PE80. The M25PE80 has a "page erase" feature, which is required to be 100% compatible with Ember's stack. CEL will transition to the new part numbers once the inventory for the old part number has been depleted. P/N ZICM357P2-1 will become ZICM357P2-2. Please contact a Mouser Technical Sales Representative for further assistance. 5-1012-19