Ajax KeyPad Plus Jeweler Black: Wireless Touch Keypad with Contactless Authentication and Advanced Security

Ajax KeyPad Plus Jeweler Black: Wireless Touch Keypad with Contactless Authentication and Advanced Security


38252.83.BL1 #38252 | Ajax KeyPad Plus Jeweller black is a wireless touch keypad designed for maximum security thanks to DESFire contactless authentication, advanced access codes and tamper protection . Jeweller communication ensures encrypted connections up to 1,700 m, while built-in functions such as duress codes , auto-wake and a panic button improve the management of professional alarm systems. Installation is quick via SmartBracket , compatible with Ajax system hubs and repeaters, offering a stylish and reliable device for residential and commercial security. Ajax

Technical Data Sheet

Reference: 38252.83.BL1

Brand: Ajax Systems

EAN: 4823114015403

Disponibilità: 6

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Born in 2011, Ajax System produces alarm and fire systems with JEWELLER radio protocol, a wireless technolog that allows to connect with a few taps the detectors in the mobile app. The Ajax System security system is easy to install in your apartment, home or office. By choosing Ajax System, you get integrated protection that is easy to manage, tamper-resistant and responds instantly to attacks. Ajax  System devices are easy to be installed: just 15 seconds to connect the control panel to the detectors. They can also support third-party surveillance cameras, making Ajax System a singular security center.

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Ajax SystemsAjax Systems

The alarm systems by Ajax System use a state-of-the-art wireless technology, thus making the devices very reliable and always connected. Ajax System detectors combine the best components with conceptual design.

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38252.83.BL1 | WIRELESS TOUCH KEYBOARD SUPPORTING CONTACTLESS ENCRYPTED CARDS AND KEYFOBS

Ajax

The Ajax KeyPad Plus Jeweller, 38252.83.BL1, black is a wireless touch keypad designed to ensure fast and secure control of your burglar alarm system thanks to DESFire contactless authentication, customizable access codes , and tamper protection , offering professional performance in any environment. Jeweller technology ensures encrypted communication up to 1,700 m, while simplified installation with SmartBracket and compatibility with Ajax hubs make this keypad a reliable and elegant solution for advanced security management.

Main specifications:

- DESFire contactless authentication, protected passes and tags

- User and coercive codes, remote management and anti-guessing

- Tamper protection and communication loss detection

- Encrypted Jeweler communication up to 1,700 m

- SmartBracket installation without disassembling the device

- Panic button and auto-wake on entrance

Further details

Communication:
Jeweller technology uses encrypted radio communication with a range of up to 1,700 m in open space, ensuring a stable and continuous connection between the keypad and the hub. The system performs regular polling to monitor device status and operates on multiple frequency bands to ensure reliability and interference resistance, making it ideal for high-efficiency security systems.
Main features :
The KeyPad Plus Jeweler integrates advanced features such as contactless authentication via DESFire , customizable codes for users and visitors, remote authorization management, and protection against code guessing. It also includes a panic function, the option to connect to fire alarm systems, and automatic activation upon entry detection, offering complete and professional control of the system.
Anti-sabotage protection:
The device integrates a tamper system that detects any attempt to open or remove the keypad, immediately sending an alarm to the control panel. It is also protected by authentication against spoofing attempts and can detect the loss of communication with the hub, preventing tampering and unauthorized access via third-party devices.
Power supply:
The keypad is powered by four pre-installed AA batteries that provide up to 3.5 years of battery life, ensuring continuous operation without the need for wiring. This solution makes it ideal for quick and versatile installations, maintaining consistent performance even in environments with temperatures ranging from -10°C to +40°C.

Technical data sheet

38252.83.BL1
Communication
Jeweler communication technology Proprietary wireless communication technology to transmit commands, alarms, and events.
Key features:
  • Two-way communication.
  • Advanced anti-sabotage.
  • Block encryption featuring a dynamic key.
  • Instant notifications.
  • Remote configuration via the Ajax apps.
Radio frequency bands 866.0 - 866.5 MHz
868.0 - 868.6 MHz
868.7 - 869.2 MHz
905.0 - 926.5 MHz
915.85 - 926.5 MHz
921.0 - 922.0 MHz
Depence on the sales reaction
Maximum effective radiated power (ERP) up to 20 mW
Automatic power control to reduce power consumption and radio interference.
Radio signal modulation GFSK
Radio signal range Up to 1,700 m
up to 5,600 ft
Between the detector and a hub (or radio signal range extender) in an open space.
Encrypted radio communication All the data stored and transmitted are protected by block encryption featuring a dynamic key.
Frequency hopping To prevent radio interference and jamming
Key features
Sensor type capacitive
Malfunctions and security mode indication When KeyPad is active, it notifies with LED indication of the security mode, problems with detectors, or communication loss with the hub
Functional button Operates in one of the modes
alarm
The system sends an alarm to the central monitoring station and users. It also activates the sirens connected to the system
mute fire alarm
Mutes interconnected fire detectors alarms
off
The button is disabled
Control codes
Pass cards
Tag key fobs
The functionality of the cards/key fobs is the same, but they differ in design.
Access via DESFire® EV1, EV2
The technology is based on the ISO 14443 international standard and combines 128-bit encryption and copy protection.
Access codes up to 200 personal codes
One code for each user. The number of personal access codes depends on the hub model
1 keypad code
One code per KeyPad
Duress codes up to 200 personal codes
One code for each user. The number of personal access codes depends on the hub model
1 keypad code
One code per KeyPad
Codes for unregistered people up to 99 personal codes
For people who are not registered in the system. The number of such codes depends on the hub model
Group security management Enter the general keypad code and the group ID to manage group security
Recommendations The device is designed for indoor use only.
Sabotage protection
Protection against code guessing KeyPad locks for 3–180 minutes if an incorrect code is entered more than 3 times in a row within 1 minute. PRO or user with admin rights can adjust the lock time in the Ajax app
Tamper alarm Notifications on attempts to detach the device from the surface or remove it from the mounting panel.
Protection against spoofing device authentication
Communication loss detection after 36 s
Detection time depends on the Jeweler or Jeweller/Fibra settings.
Power Supply
Battery 4 × AAA
Pre-installed.
Type Type C
Calculated battery life up to 3 years
Detector's operating voltage range 2.25–3.3 V⎓
Device's nominal operating voltage 3 V⎓
Quiescent device's current consumption at nominal voltage 0.064 mA
Maximum device's current consumption at nominal voltage 165 mA
Full capacity 12,000 mAh
Capacity of each battery is 3,000 mAh.
Low battery voltage 2.5 V⎓
Low battery recovery voltage 2.7 V⎓
End-of-life battery voltage 2.25 V⎓
Device is switched off.
End-of-life battery capacity 150 mAh
End-of-life capacity of each battery is 250 mAh.
Manufacturer Huiderui
UL listed.
Energizer
Enclosure
Color Black
Dimension 165 × 113 × 20 mm
6.50″ × 4.45″ × 0.79″
Weight 267 g
9.42 oz
Operating temperature range from −10 °C to +40 °C
from 14 °F to 104 °F
Temperature range from 32 °F (0 °C) to 120 °F (+49 °C) is certified according to UL/ULC standards
Operating humidity up to 75%
Humidity of up to 93% is certified according to UL/ULC standards
Complete set KeyPad Plus Jeweler
SmartBracket mounting panel
4 × ААА battery (pre-installed)
Installation kit
Quick start guide
Warranty 24 months
All our products are in conformity with the in force CE normative (read here). To ask for a copy of the certification fill out this form

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