VM-5 is the smallest low power consumption UHF RFID Module in VANCH series , only half size of credit card . low power consumption , small size, best therefore performance and perfect anti-jamming ,etc., all these make it better used in RFID handheld reader and RFID printer, industry computer and so on. Model (Order Code):VM-5 Physical Characteristics Dimensions: 61(L)*45(W)*8(H)mm Weight: 200g Environment Operating Temp: -10°C to 55°C (14°F to 131°F) Storage Temp: -20°C to 80°C (-4°F to 176°F) Humidity: 10% to 95% Non-condensing enclosure: IP-00 Antenna Connection: 1 MMCX (Female) Power: External 3.75-5 VDC Frequency Ranges: 902 or 928 MHz band/865-868MHz (We can do as per your requirements) RF power control: 20-30dBm Tag Air Interfaces: EPC Class 1 Gen 2 or ISO 18000-6B Communication Interface:RS232