Part of the tripartite ATP-independent periplasmic (TRAP) transport system TeaABC involved in the uptake of ectoine and hydroxyectoine in response to osmotic upshock. Probably functions as a recovery system for synthesized ectoine that leaks out of the cell. The complex comprises the extracytoplasmic solute receptor protein TeaA, and the two transmembrane proteins TeaB and TeaC. Deletion abolishes accumulation of ectoine from the medium. Belongs to the TRAP transporter small permease family.