Prox Reader / Keypad

FK-640 it’s an Access Control System that utilizing proven digital radio frequency identification (RFID) technology, RBH FK-640 Proximity Reader and Keypad may be mounted directly to standard single-gang US wall-boxes, and is ideal for applications requiring an access credential and/or personal identification number (PIN), such as high security dual verification. Keypad data is transmitted via the reader’s data lines in either an 8-Bit Burst or 26-Bit Wiegand data format. The alpha-numeric keypad itself makes use of a durable (no moving parts), non-mechanical capacitive technology. Enhancements include tactile feedback, and a raised ‘pip’ on the 5-key for use by visually impaired individuals.

Mounting is simplified with horizontal and vertical mounting slots, instead of holes, which allow the reader to be conveniently adjusted and leveled. To allow both indoor and outdoor operation the electronics are sealed in tamper resistant epoxy potting. This unit is IP67 Rated


125 KHz, Compatible credentials: 125 KHz AWID

Reader Data Formats:

Wiegand (26 bit and other formats) Call for a complete lis of compatible formats

Keypad Data Formats:

Field configurable, 8-Bit Burst (default) and 26-Bit Wiegand

Visual Annunciation:

Tri-color LED, “LED off” function

Audio Annunciation:

Built-in piezo sounder


Directly on metal, single-gang US wall-box


4.6” x 3” x 0.7” (117 x 77 x 18mm)


4 oz. (113 g)

Operating Temperature:

-400 F to +1490 F (-400 C to +650 C)

Read Range @ 125 KHz (under ideal conditions):

Clamshell Prox Card – Up to 6 inches (152 mm)
Printable Prox Card – Up to 4 inches (102 mm)
Proximity Key Fob – Up to 3 inches (76 mm)
Adhesive Proximity Tag – Up to 3 inches (76 mm)


Additional Format Compatibility:

p/n FK-640-H, Compatible credentials: 125 KHz

Additional MIFARE Compatibility:

p/n FK-640-M, Compatible credentials: 13.56 MHz MIFARE
(read range will vary)


500’ (152 m) max, 18-22 AWG, 6-7 conductor shielded cable

Operating Voltage:

+5 to 14 VDC

Power Draw:

50 mA typical, 115 mA on card read, 30 mA (@5 VDC & LED off)

Included in the Box:

Prox reader/ keypad, configuration card, black or off-white covers, manual


Limited 5 year warranty against defects in materials and workmanship

FK-640 Access Control System digital radio Proximity Reader Keypad

• Compatible with all standard access
control systems
• Best-in-class read range
• Field configurable
• Fits single-gang US wall-box
• Back-lit keypad
• Tactile feedback
• Internal Piezo Sounder
• Tri-color LED standard
• Multiple Wiegand formats*
• Optional additional format compatibility
• Many additional features…
*Call for a complete list of compatible formats