1.Laser barcode reader module 2.GPRS module(built-in-aerial) 3. Read/write Philips Series or RFID module Main Applications:Business, retail ... customs, railways, military, security and other fields.Characters & Extending Function:1.Laser barcode reader module 650nm laser, Support barcode types: ... Ultralight, Mifare1(S50), Mifare4(S70), MifarePro,DESfire and so on.4.(Optional) a standard SAM socket, ...