Peplink Pepwave Surf On-The-Go (SUS-AGN1)

Overview
"pismolabs", "Pismo315 R2", and "DNI P/N 2976370502"
 * is silkscreened on the board in the FCC photos.

Delta Networks is indeed presumed to be the manufacturer..

Default settings are per the FCC manual. They may be inaccurate.