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The Ajax KeyPad Combi White represents a key milestone in wireless security consolidation, combining three vital safety functions into a single premium matte white housing: a capacitive touch interface, a secure proximity card reader, and a powerful internal siren. It allows users to easily manage system areas, receive acoustic alerts during alarm events, and bypass physical codes using proximity credentials.
The integrated piezoelectric siren triggers powerful visual and acoustic alarms, configurable between 81 and 105 dB at a distance of 1 meter, alongside audible arming delays. The touchless card reader uses DESFire® EV1/EV2 technology, operating at 13.56 MHz with enterprise-grade data encryption to secure signal transfers. The layout also features duress code programming to quietly report alarms under immediate physical threat.
The device is backed by software protection algorithms designed to counter repeated forced entries, locking the touchscreen automatically after three consecutive failed attempts. Radio transmission utilizes the proprietary Jeweller protocol with permanent AES-128 block encryption and automatic frequency hopping to prevent signal jamming. It delivers an operational range of up to 1700 meters.
To comfortably support the current demands of the piezoelectric acoustic siren, the KeyPad Combi is powered by four pre-installed CR123A Lithium batteries, guaranteeing reliable continuous performance up to 3 years. Pairing with the hub is performed within seconds via the printed QR code inside the brand's mobile app. Wall installation is cleanly completed using the included SmartBracket panel. Check out our selection under Ajax kits and hubs.
| Technical Parameter | Detailed Specification & Engineering Specs |
|---|---|
| Device Type | Wireless digital touch capacitive numeric keypad with built-in siren and proximity card reader |
| Security Grade | Grade 2 (EN 50131-1, EN 50131-3, EN 50131-4, EN 50131-5-3) |
| Hardware Compatibility | Fully compatible with Hub Plus, Hub 2, Hub 2 Plus, ReX, and ReX 2 (Jeweller) |
| Integrated Siren | Piezoelectric, volume adjustable from 81 to 105 dB (at 1 meter distance) |
| Acoustic Alarm Frequency | 3.5 ± 0.5 kHz (highly penetrative alarm tone) |
| RFID Card / Key Fob Technology | DESFire® EV1, EV2 (operating frequency 13.56 MHz, advanced dynamic encryption) |
| Maximum Reader Capacity | Up to 200 key fobs/proximity cards (depending on the paired Hub model) |
| Radio Protocol Technology | Proprietary bidirectional Jeweller radio protocol with automatic frequency hopping |
| Radio Frequency Bands | 868.0 – 868.6 MHz (auto-adjusts to avoid spectrum jamming and congestion) |
| Radio Signal Range | Up to 1700 meters in open field space (without any physical obstructions) |
| Security & Encryption | Permanent symmetric AES-128 block encryption with dynamic floating keys |
| Duress Signaling Feature | Yes, supports dedicated code and proximity card/tag for quiet silent distress alarms |
| Brute Force Protection | Automatic software lockout (adjustable from 3 to 180 min) after 3 consecutive wrong inputs |
| Anti-Sabotage Protections | Rear mechanical tamper button against tear-off/opening and active Jamming detection |
| Power Supply Layout | 4 × CR123A Lithium batteries (3 V⎓) included and pre-installed in the box |
| Battery Lifespan | Up to 3 years (depending on radio ping cycles and active acoustic alarm triggers) |
| Exact Dimensions | 150 × 103 × 19 mm |
| Net Weight | 267 g |
| Protection Rating | IP50 (designed exclusively for secure indoor environments) |
| Temperature & Humidity | Operating thermal range: -10 °C to +40 °C | Maximum operating humidity: 75% |
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