Ideal for medium-range applications. Dimensions: 5.0 in. x 5.0 in. x 1.0 in. (12.7 x 12.7 x 2.54 cm). Available with Wiegand, Serial (RS-232/RS-422) or Clock-and-Data interface. Power requirements: 10-28.5 VDC. Typical maximum read range (Depending on local installation conditions): ProxCard in. II card - up to 8 in. (20 cm) ISOProx in. II card - up to 7 in. (17.5 cm) DuoProx in. II card - up to 7 in. (17.5 cm) Smart ISOProx in. II card - up to 7 in. (17.5 cm) Smart DuoProx in. II card in. up to 7 in. (17.5 cm) HID Proximity & MIFARE in. card in. up to 7 in. (17.5 cm) ProxCard in. Plus card - up to 3 in. (7.5 cm) ProxKey in. II keyfob - up to 3 in. (7.5 cm) MicroProx in. Tag in. up to 4 in. (10.2 cm) ProxPass in. Active Vehicle Tag in. N/A