Ajax DoorProtect U Jeweller — 121293.03.WH1 (White)

• Wireless magnetic opening detector for indoor use; sealed-contact reed relays for reliable door/window detection.
• Two magnets supplied (small ≈ 10 mm activation, large ≈ 20 mm activation) for flexible mounting positions.
• Connects to Ajax hub over secure two-way Jeweller radio protocol; radio range up to 1,200 m in open space (region-dependent).
• Supports an external third-party wired NC contact (external terminal) — recommended max cable length 1 m.
• Pre-installed CR123A battery (3 V) — typical battery life up to 7 years under typical usage; tamper switch and LED indicator included.
• SmartBracket quick-mount plate for secure, simple installation; remote configuration and testing via Ajax app.

Use cases: professional intruder systems, residential and commercial indoor doors or windows requiring reliable magnetic contact monitoring. Suitable for security installers and DIY-savvy users when installed per manufacturer guidance.

Installation & safety: ensure device is installed within Jeweller radio range to the hub (obstructions will reduce range), observe operating limits (−10 °C to +40 °C, humidity up to 75%), and fit magnets aligned to specified gaps. Professional installation recommended for commercial systems. Do not use outdoors (IP50).

Compliance & warranty: product is supplied with manufacturer warranty (typical 2 years). Check product labelling and vendor documentation for CE / UKCA conformity statements applicable to your region.