The PAC 20120 OneProx GS3 HF Mullion Reader is a compact, high-frequency card reader designed specifically for doorframe installation — the kind of solution that fits neatly into tight spaces without compromising on performance. With a 45mm reading range and compatibility across PAC Ops, PAC Ops Lite, and a wide range of Wiegand variants, it integrates readily into most existing access control setups.

Built for demanding environments, the GS3 carries an IP65 rating, making it equally suited to indoor lobbies and exposed external entrances. Rain, dust, temperature variation — the kind of conditions that degrade lesser hardware over time — are well within its operating parameters.

If you need a reliable mullion-form reader that doesn't ask much in terms of installation space but delivers consistent high-frequency performance, the OneProx GS3 HF is a practical, well-specified choice.