The HCR335 support smart card memory and CPU T=1/T=0 and has built in Security Access Module socket. It has an IC Card landing contact, coin drop functionality and card latching capability. It comes with the capability to upgrade program firmware and has a bi-color LED status indicator. It is an intelligent reader that can reject a card during power failures. It conforms to FCC Class B, CE Class B, BSMI Class B standards.