125Khz. The Videx 955/T is a proximity token fob that has a read range of 20mm and a cut out to attach to a key ring. It will suit Vprox controller based and standalone systems. This grey fob is numbered to allow manual programming where necessary, and is constructed from tough ABS plastic.. Tough ABS plastic casing. 125Khz proximity fob. Numbered to allow manual proogramming as necessary. 20mm read range