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AJAX 42849.90.BL Contactless Key Fob, 10-Piece, Black

SKU: 4284990BL MPN: 42849.90.BL AJAX

Special Order: typically 2–6 weeks

Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.

Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.

A member of our team will check with the manufacturer and personally reply by email.

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Product images for AJAX 42849.90.BL Contactless Key Fob, 10-Piece, Black. 4 image(s) available. Click on image to view full size.

Key Features

  • Fast, password-free access: present the fob to KeyPad Plus to arm/disarm systems and speed daily operations.
  • Enterprise-grade security: DESFire contactless technology with 128-bit encryption and copy protection safeguards access rights.
  • Centralized control: assign names and permissions in the Ajax app and revoke or modify access in real time.
  • Multi-site flexibility: each Tag can pair with up to 13 control panels for unified access across offices or facilities.
  • Bulk convenience: 10-piece black pack with up to 10 years service life, ideal for deployments and replacement cycles.

Quick Specifications

Product Model
42849.90.BL
Brand Name
AJAX
Product Line
Baseline, Intrusion protection
Product Name
Key Fob
View Full Technical Specifications

Explore the details

Product information

42849.90.BL

Overview

Streamline secure access control for employees and trusted visitors with the AJAX 42849.90.BL Contactless Key Fob 10-piece pack. These compact, black key fobs let users arm and disarm the Ajax security system quickly without passwords or app access, reducing friction at entry points and improving operational efficiency. Built on DESFire contactless technology (ISO 14443) with 128-bit encryption and copy protection, Tags provide industry-grade security suitable for commercial, retail, and monitoring environments. Each Tag can be linked to up to 13 control panels and is managed through the Ajax app, where administrators can assign names, set permissions, and track every access event in the audit log. With a service life of up to 10 years and real-time access revocation, Tags support scalable access control and simplify surveillance and security management across multiple sites. Note: Ajax Tag is compatible with KeyPad Plus keyboards. Ideal for offices, stores, and security monitoring centers that need reliable, audit-ready contactless access — add this 10-pack to your access control deployment today.

Features

  • Fast, password-free access: present the fob to KeyPad Plus to arm/disarm systems and speed daily operations.
  • Enterprise-grade security: DESFire contactless technology with 128-bit encryption and copy protection safeguards access rights.
  • Centralized control: assign names and permissions in the Ajax app and revoke or modify access in real time.
  • Multi-site flexibility: each Tag can pair with up to 13 control panels for unified access across offices or facilities.
  • Bulk convenience: 10-piece black pack with up to 10 years service life, ideal for deployments and replacement cycles.
11 of 11 specifications
Technical specifications for AJAX 42849.90.BL Contactless Key Fob, 10-Piece, Black
General Information
Brand Name AJAX
Manufacturer AJAX SYSTEMS CH
Product Line Baseline, Intrusion protection
Product Name Key Fob
Product Type Key Fob
Country of Origin UA
Packaged Quantity 10
Manufacturer Part Number 42849.90.BL
Product Information
Installation Type Hybrid (DIY + Professional)
Warranty
Limited Warranty 2-Year
Miscellaneous
Features Ajax Tag only works with KeyPad Plus keyboards, Contactless, DESFire technology for contactless communication, One Tag can be connected to up to 13 security system control panels

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SKU:
4284990BL
Manufacturer part:
42849.90.BL
How do I confirm compatibility?

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When will this item ship?

Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.

Shipping, freight and delivery details
What should I know about returns?

Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.

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AJAX 42849.90.BL Contactless Key Fob, 10-Piece, Black

42849.90.BL

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