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AJAX 42853.90.WH Contactless Key Fob, 3-Piece, White

SKU: 4285390WH MPN: 42853.90.WH 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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Key Features

  • Contactless convenience: disarm and change security modes instantly without entering passwords or opening an app.
  • Enterprise-grade encryption: DESFire ISO 14443 contactless technology with 128-bit protection to safeguard access and monitoring.
  • Multi-site flexibility: each Tag connects with up to 13 control panels, simplifying access across offices or multi-tenant properties.
  • Administrative control: revoke or restrict Tag access in real time and track every action in the event log for audit-ready security.
  • Durable, ready-to-deploy pack: three white key fobs with up to 10 years service life—easy to issue to staff, contractors or residents.

Quick Specifications

Product Model
42853.90.WH
Brand Name
AJAX
Product Line
Baseline, Intrusion protection
Product Name
Keyfob Transmitter
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Product information

42853.90.WH

Overview

Streamline secure access for staff and residents with the AJAX Contactless Key Fob (3-piece). This AJAX key fob is designed for fast, password-free disarming and mode control of your alarm system and access control panels, improving everyday security and reducing friction at entry points. Using DESFire contactless technology (ISO 14443) with robust 128-bit encryption and copy protection, the Tag delivers transit-grade security trusted by high-profile access and surveillance systems. One Tag can be registered to up to 13 control panels, making it ideal for offices, multi-site facilities or managed properties that require central monitoring and flexible credentialing. Administrators can assign names and permissions in the Ajax app, revoke access instantly, and review event logs for complete audit trails. Packaged as three white fobs with a service life up to ten years, these easy-to-issue key fobs pair with KeyPad Plus to give reliable, enterprise-level access control without complex credentials. Add secure, user-friendly credentials to your security and monitoring solution—order the AJAX Contactless Key Fob 3-pack for buildings, offices, and managed properties.

Features

  • Contactless convenience: disarm and change security modes instantly without entering passwords or opening an app.
  • Enterprise-grade encryption: DESFire ISO 14443 contactless technology with 128-bit protection to safeguard access and monitoring.
  • Multi-site flexibility: each Tag connects with up to 13 control panels, simplifying access across offices or multi-tenant properties.
  • Administrative control: revoke or restrict Tag access in real time and track every action in the event log for audit-ready security.
  • Durable, ready-to-deploy pack: three white key fobs with up to 10 years service life—easy to issue to staff, contractors or residents.
12 of 12 specifications
Technical specifications for AJAX 42853.90.WH Contactless Key Fob, 3-Piece, White
General Information
Brand Name AJAX
Manufacturer AJAX SYSTEMS CH
Product Line Baseline, Intrusion protection
Product Name Keyfob Transmitter
Product Type Keyfob Transmitter
Application/Usage Alarm System, Control Panel, Home, Office
Country of Origin UA
Packaged Quantity 3
Manufacturer Part Number 42853.90.WH
Physical Characteristics
Color White
Product Information
Installation Type Hybrid (DIY + Professional)
Warranty
Limited Warranty 2-Year

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SKU:
4285390WH
Manufacturer part:
42853.90.WH
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 42853.90.WH Contactless Key Fob, 3-Piece, White

42853.90.WH

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