Power supply: DC12V±10% Type of cards:EM/M1/Second generation ID card(optional) Reading operation: Read the card serial number Colour: white or black Read Range:M1:4-8cm EM:5-15cm Communication interface(optional): WG26、WG34、RS232、RS485 Communication distance: WG:100m,RS232:10m,RS485:1000m Dimensions: 115mm×74mm×21mm Environmental temperature: 0℃~70℃