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AJAX 42799.21.BL3 Wireless Magnetic Opening Detector with Shock and Tilt Sensor, Black

SKU: 4279921BL3 MPN: 42799.21.BL3 AJAX
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Key Features

  • Advanced intrusion prevention with integrated shock and tilt detection to catch forced entry and tampering before damage escalates
  • Long maintenance intervals—pre-installed battery lasts up to 5 years for reliable, low-cost operation
  • Secure, long-range RF communication (up to 1,200 m) for flexible placement across large sites and robust monitoring
  • Hybrid integration via NC input lets you connect third-party normally closed detectors for customized security setups
  • Quick commissioning and remote management with QR-code pairing and app-based controls for faster installation and oversight

Quick Specifications

Product Model
42799.21.BL3
Brand Name
AJAX
Product Line
DoorProtect
Product Name
Wireless Indoor Opening Detector with Shock and Tilt Sensors
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Product information

42799.21.BL3

Overview

Protect doors and windows with precise, low-maintenance monitoring using the AJAX Wireless Magnetic Opening Detector with Shock and Tilt Sensor. Designed for professional security and surveillance applications, this AJAX door/window sensor combines a magnetic contact with a built-in accelerometer to detect opening, shock and tilt—alerting you to forced entry, prying, or device tampering. With up to 5 years of operation on the pre-installed battery and up to 1,200 m of two-way encrypted RF communication, it delivers dependable, long-range monitoring for commercial and residential deployments. The adjustable tilt angle and intelligent filtering reduce false alarms from vibration or chatter, while the additional NC input enables hybrid integration with third-party normally closed detectors for expanded coverage. Fast QR-code pairing and remote setup through the mobile app streamline installation and ongoing management for security integrators and facility managers. Ideal for intrusion detection, asset protection and perimeter control—add this AJAX magnetic contact to your security system today to tighten surveillance and simplify maintenance.

Features

  • Advanced intrusion prevention with integrated shock and tilt detection to catch forced entry and tampering before damage escalates
  • Long maintenance intervals—pre-installed battery lasts up to 5 years for reliable, low-cost operation
  • Secure, long-range RF communication (up to 1,200 m) for flexible placement across large sites and robust monitoring
  • Hybrid integration via NC input lets you connect third-party normally closed detectors for customized security setups
  • Quick commissioning and remote management with QR-code pairing and app-based controls for faster installation and oversight
19 of 19 specifications
Technical specifications for AJAX 42799.21.BL3 Wireless Magnetic Opening Detector with Shock and Tilt Sensor, Black
General Information
Brand Name AJAX
Manufacturer AJAX SYSTEMS CH
Product Line DoorProtect
Product Name Wireless Indoor Opening Detector with Shock and Tilt Sensors
Product Type Door/Window Sensor
Manufacturer Part Number 42799.21.BL3
Technical Information
Application/Usage Indoor
Wireless Technology RF
Connectivity Technology Wireless
Physical Characteristics
Color Black
Height 3.5"
Weight 1.02 oz
Form Factor Door Mount
Power Description
Power Source Battery
Product Information
Mount Type Door Mount
Installation Type Hybrid
Miscellaneous
Features Adjustable tilt angle for alarm triggering, Built-in accelerometer for shock and tilt detection
Indoor/Outdoor Indoor
Country of Origin UA

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SKU:
4279921BL3
Manufacturer part:
42799.21.BL3
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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 42799.21.BL3 Wireless Magnetic Opening Detector with Shock and Tilt Sensor, Black

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