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 or Clock-and-Data interface. Power requirements: 5-16 VDC. Typical maximum read range (Depending on local installation conditions): ProxCard II card - up to 8 in. (20 cm) ISOProx II card - up to 7 in. (17.5 cm) DuoProx II card - up to 7 in. (17.5 cm) Smart ISOProx II card - up to 7 in. (17.5 cm) Smart DuoProx II card up to 7 in. (17.5 cm) HID Proximity & MIFARE card up to 7 in. (17.5 cm) ProxCard Plus card - up to 3 in. (7.5 cm) ProxKey II keyfob - up to 3 in. (7.5 cm) MicroProx Tag up to 4 in. (10.2 cm) ProxPass Active Vehicle Tag - N/A