Ajax Superior DoorProtect Jeweller (white) — wireless magnetic opening detector for indoor intruder-alarm use.

• Reliable two‑way Jeweller radio communication with encryption for long‑range, anti‑jamming signalling to Ajax Hubs and ReX extenders.
• Magnetic reed switching for door/window open/close detection; ships with two magnet sizes for flexible mounting on narrow or larger frames.
• Tamper/anti‑opening protection with LED event indication and a tamper switch to alert when the enclosure is opened or removed.
• External wired NC input to connect a third‑party normally‑closed contact for expanded detection options.
• Pre‑installed CR123A battery with multi‑year life (Ajax quotes up to 7 years, dependent on usage).
• Compact ABS enclosure with SmartBracket mounting panel (screw supplied) for simple surface installation.

Who it’s for: installers and end users needing a compact, reliable wireless door/window contact compatible with Ajax systems — suitable for domestic and commercial indoor intruder alarm installations.

Safety & compliance: check the device and supplied documentation for CE/UKCA markings and applicable certification. Follow local wiring and alarm installation regulations and manufacturer installation guidance. For full technical details and installation instructions, refer to the supplied datasheet/manual.

Warranty: 24 months (manufacturer).

Note: confirm with your supplier whether this Superior SKU uses one or two reed switches—reseller listings for SKU 133194.03.WH1 sometimes reference two reed relays whereas Ajax generic DoorProtect pages list a single reed.