Download here for Functional List, Dimension, Technical Specification, and Model Selection. DOWNLOAD PORTABLE CARD READERModel: BS52MT-WIFI Features; Supports GSM and WIFI for PC connection. Store up to 100,000 cards and 100,000 offline transactions. Audio indication to differentiate between valid and invalid clocking. Built-in Real-time clock with time adjustment via controller keypad or PC time synchronize. Built-in Mifare reader module.