Designed to fit onto a door frame , the Oneprox GS3 HF Mullion Reader comes complete with a tamper switch and mounting plate for ease of installation, providing a robust and secure solution for any commercial application. Using our unique Oneprox Smart (Ops) technology and the industry leading MIFARE® and DESFire® EV1 reading protocols, we are able to deliver the highest available standard of access control security within the industry.