This aluminum auto-locking cart offers an optional Proximity Reader. Simply wave the card in front of the reader to open. Lock the cart by pressing the lock button or set the Auto-Lock Timer for anywhere from 1 to 998 minutes. The Proximity Reader will read most low frequency HID Prox Cards (125 kHz). The Cart features lightweight aluminum construction, aluminum mounting tracks, stabilizing frame, five-inch swivel casters (two locking, one tracking), Master Code for all programming, Access Code for daily use, manual or automatic locking, manual key override for emergency access and "Low Battery" indicator light. The Proximity Reader is a factory installed option on the Auto-Locking Carts only.