Radio Key readers are available in three form factors: the RK-WM, an S-shaped mini-mullion; the RK-WS, a traditional single-gang box \"wall switch\" housing; and the RK-WL, a large post/wall mount housing for long range applications.

Radio Key readers use 125 kHz proximity technology, and work with Secura Key encoded cards and key tags. Radio Key readers use patented Dynascan automatic tuning to optimize the reader to its RF environment, which provides dramatically better read range than competing products with the same antenna size.