Keyscan K-PROX3 Proximity Reader, 2-In-1 Mounting Options/Mullion/1-Gang/Electrical Box Mount, 12 Volt DC, 80 Milliampere

The Keyscan K-PROX3 is a 125 kHz proximity access control card reader designed for commercial and institutional security systems. Supporting Keyscan 36-bit and standard 26-bit Wiegand credentials, it provides reading distances up to 5 inches off metal and 4 inches on metal with compatible clamshell cards. The reader operates on 12VDC at 80mA typical and features heartbeat supervision, dedicated status LEDs, an integrated audible beeper, and optional tamper monitoring. Its weather-resistant, epoxy-sealed construction and interchangeable mullion and single-gang mounting options support indoor and outdoor access control installations.

Keyscan K-PROX3 125 kHz Proximity Access Control Card Reader

The Keyscan K-PROX3 Proximity Card Reader provides contactless credential identification for commercial, institutional, and residential access control systems. Manufactured by dormakaba under the Keyscan electronic access control product family, this reader operates at 125 kHz and supports compatible Keyscan, HID, and third-party proximity credentials. Its standard Wiegand output accommodates Keyscan proprietary 36-bit and conventional 26-bit credential formats, allowing integration with supported Keyscan access control panels and selected third-party controllers. The K-PROX3 features a compact black housing and versatile mounting hardware for installation on narrow door mullions or standard single-gang electrical boxes. Its combination of credential compatibility, local status indication, and supervised reader communication makes it suitable for offices, schools, healthcare facilities, apartment buildings, and other electronically secured entrances.

The K-PROX3 provides a maximum credential reading distance of 5 inches (12.7 cm) when mounted away from metal surfaces and approximately 4 inches (10.2 cm) when installed directly on metal, based on compatible clamshell proximity cards. Supported credentials include the Keyscan CS125-36 clamshell card, Farpointe PSM-2P-H, PSK-3-H, PDT-1-H, and selected HID C1325, C1386, C1391, and ProxKey III credentials. Actual compatibility depends on the credential's encoding, facility code, and the connected access control panel's supported card formats. The reader incorporates dedicated LED indicators for access status, power, Present3 functions, and facility lockdown conditions. Advanced Keyscan-specific functions require compatible control hardware and firmware, including supported PC1097 controller boards with firmware version 9.39 or later for dedicated LED operation.

The Keyscan K-PROX3 incorporates intelligent heartbeat supervision that allows compatible Keyscan access control panels to identify interruptions in reader communication caused by damaged wiring or device malfunction. When enabled, the system can report a reader trouble condition rather than relying solely on credential presentation to verify connectivity. The reader also includes an integrated audible beeper for card presentation feedback, access events, and supported local door-held-open alerts. Optional anti-tamper monitoring provides additional security against unauthorized reader removal or interference, although the required tamper switch is not included as standard equipment. Keyscan-specific enhanced functions can be configured using compatible programming cards, while basic Wiegand credential-reading operation remains available with appropriately configured third-party access control equipment.

The K-PROX3 operates on nominal 12VDC power with a typical current consumption of 80mA, supplied through a compatible access control controller or regulated power source. Its standard wiring arrangement includes a 12-inch factory-installed wire pigtail and supports Wiegand cable runs up to 500 feet (152 meters) using six-conductor shielded 22 AWG cable. Dedicated conductors provide power, ground, Wiegand Data 0 and Data 1, LED control, and pre-alert connections, with additional wiring available for optional external alert devices. The reader includes mounting options for both mullion installations measuring approximately 4-7/16 x 1-11/16 x 11/16 inches and single-gang wall installations measuring approximately 4-3/4 x 3 x 5/8 inches. Its sealed internal electronics are protected by tamper-resistant epoxy encapsulation, helping resist moisture, dust, and environmental exposure. The manufacturer specifies an operating temperature range of -40 F to 150.8 F (-40 C to 66 C).

The Keyscan K-PROX3 is suitable for indoor and outdoor access-controlled entrances, including commercial storefronts, office buildings, educational campuses, healthcare properties, industrial facilities, and multifamily residential buildings. Its compact form factor accommodates aluminum door frames and narrow installation surfaces, while the included mounting options simplify replacement of existing proximity readers. Manufacturer documentation identifies compliance with ANSI/UL 294, CAN/ULC S319-05, FCC, and Industry Canada requirements, along with a limited lifetime manufacturer warranty. For enhanced security functions, installers must verify compatibility with the connected Keyscan controller and applicable firmware before commissioning. The reader is designed for 125 kHz proximity credentials rather than 13.56 MHz smart cards or Bluetooth mobile credentials, making it especially useful for maintaining existing proximity-card systems and expanding compatible Keyscan installations. By combining Wiegand credential compatibility, heartbeat supervision, multifunction LED indication, and weather-resistant construction, the K-PROX3 provides a dependable reader interface for professionally installed access control systems.