- Wireless magnetic opening detector.
- Ideal for doors, windows, and gates.
- Includes two different magnet sizes.
- Adjustable operating gap up to 2 cm.
- Auxiliary terminal for external NC detectors.
- Wireless radio range up to 1,200 meters.
- Outstanding battery lifespan up to 7 years.
Essential and Trusted Perimeter Protection Against Intrusions The Ajax DoorProtect Jeweller is the staple wireless magnetic contact forming the crucial first line of defense within any residential or commercial security ecosystem. Purpose-built to monitor the opening and closing status of doors, windows, skylights, and indoor entryways with extreme accuracy, this device reacts instantaneously within milliseconds when the magnet separates from the sensor main body. Its durable physical architecture features a premium mechanical reed switch array, field-tested to sustain over two million operations without losing structural responsiveness.
Flexible Installation Metrics and Advanced False Alarm Immunity Device deployment flexibility is heightened by the inclusion of two distinct magnets in the standard retail pack: a large magnet, tailored for heavy doors or wide frames showing significant alignment tolerances (operating gap up to 2 cm), and a small magnet, perfect for thin window profiles, aluminum casings, or PVC structures where physical space is limited (operating gap up to 1 cm). Furthermore, DoorProtect incorporates a smart digital signal filter that parses raw mechanical switch data, easily dropping short vibration noise caused by wind gusts, thereby removing false alerts.
Zone Expansion Framework and Encrypted Radio Link On its back frame, the unit hosts a dedicated physical auxiliary input terminal block supporting normally closed (NC) dry contacts. This integration tool enables installers to hardwire a secondary third-party peripheral — such as a heavy roller-shutter contact or an emergency panic button — grouping and routing telemetry signals smoothly through DoorProtect's integrated wireless radio antenna. All network communication with the central Hub is locked down via the proprietary Jeweller protocol, showcasing automated frequency hopping against jamming and polling rates scalable down to 12 seconds.