Model( Order Code) VI-88 Dimensions 405( L) * 405( W) * 35( H) mm Weight 4KG Environment Operatin g Temp -20° C to 55° C ( -4° F to 131° F) Storage Temp -40° C to 80° C ( -40° F to 176° F) Humidity 10% to 95% Non-condensing enclosure IP-53 Antenna Connection 1 SMA ( Female) Power External 110 - 240 V AC adapter Frequency Ranges 902-928 MHz Or 865-868MHz RF power control 20-30dBm Tag Air Interfaces EPC Class 1 Gen 2 or ISO 18000-6B Communication Interface RS232/ RS485; Wiegand26/ 34 Reader Range > 8m tag and antenna dependent