Schlage proximity cards offer an easy and convenient access control solution. Schlage proximity cards, which operate on 125 kHz frequency, can easily be integrated into your existing access control system. Schlage proximity cards are quite rugged, ensuring a long prox card life. They also require no batteries and little maintenance for the life of the card. Need help choosing the best Schlage proximity card for your facility? Our ID experts understand how proximity cards work and can help you make the right choice for your facility.