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Ajax DoorProtect U Door and Window Contact

Name: Ajax DoorProtect U Door and Window Contact
Brand: Ajax
SKU: AJAX-DOORPROTECT-U

£63.95

(£53.29 ex VAT)

sku: AJAX-DOORPROTECT-U

A compact wireless opening detector for doors and windows. Flexible magnet positioning, an additional wired-sensor input and optional chime alerts.

Requires a compatible Ajax hub. Chime notifications also require a compatible Ajax siren.

Colour

Keys Supplied: per lock ( total) total (unless ordering multiple groups)

Additional Keys are available below

Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

Know when an entrance opens. A small detail with an important job.

DoorProtect U monitors the opening of a door or window and reports it to your Ajax alarm. A choice of two supplied magnets helps suit the frame, with the magnet positioned on either side of the detector.

Ajax DoorProtect U Door and Window Contact

More freedom around the frame.

Two reed switches allow the magnet to sit on the left or right. Use one magnet on one side only. The small magnet operates up to 1 cm away, and the larger magnet up to 2 cm; check the gap throughout the opening movement.

Bring another contact into the system.

The normally closed input can connect a suitable third-party wired detector. This is an optional local wired connection, not a requirement to run alarm cable back to the hub. Confirm the external detector and wiring against the manual.

A discreet, wire-free installation.

A pre-installed CR123A battery provides up to seven years of operation. Jeweller carries alarms and status information wirelessly, while the hub reports a low battery or lost connection.

Opening detection or something more? Two approaches to the same entrance.

DoorProtect U covers opening. DoorProtect Plus U adds shock and tilt detection where the door or window needs that extra information. Neither is an acoustic glass-break detector.

Scroll across if needed to compare prices and specifications.

Product prices and specifications. Configurable products show family options and starting prices.
	Ajax DoorProtect U Door and Window Contact View product	Ajax DoorProtect Plus U Jeweller View product
Price Including VAT	From £63.95	From £87.95
Detection	Magnetic opening contact with two reed switches; additional NC input	1 accelerometer 2 reed switches
Power supply	1 x CR123A battery, pre-installed	1 × CR123A; Pre-installed.
Battery life	Up to 7 years	up to 5 years
Size (W x H x D)	22 x 103 x 21 (mm)	22 x 103 x 21 (mm)

Part of a complete alarm. Connect the detection to a response.

A compatible hub is required; Hub 2 Plus is our main residential choice. A keypad adds local control and a siren adds an audible warning. These are separate system components, not alternative detectors.

Ajax Hub 2 Plus Alarm Hub

An Ajax alarm hub with Ethernet, Wi-Fi and two mobile SIM slots. Brings compatible detectors, sirens and automation together in the Ajax app.

Ajax KeyPad Plus Wireless Alarm Keypad

Control your Ajax alarm with a code, Pass card or Tag key fob. A touch-sensitive keypad with contactless access and individual permissions.

Ajax HomeSiren U Indoor Alarm Siren

A compact indoor siren with adjustable sound and LED indication. Adds alarms, entry/exit reminders and optional door-opening chimes to Ajax.

What you need. Fitting and setup.

You need a compatible Ajax hub and a sound indoor mounting surface on the door/window frame and moving part. The supplied battery powers the detector, so no mains, Ethernet or cable to the hub is needed. Fit one magnet beside the detector, within the specified working gap, without obstructing the opening. Check signal strength and the opening/closing test before permanent fixing. Only the optional external NC detector needs local cabling. Do not treat this opening contact as a shock, tilt, glass-break or fire detector.

Explore Hub 2 Plus Fitting and setup guide Technical specifications

Part	Size (mm)
width	22
Height	103
Depth	21

Brand

SKU

AJAX-DOORPROTECT-U

Network Connection

Jeweller radio

Power Supply

1 x CR123A battery, pre-installed

Enclosure Protection

IP50

Detection

Magnetic opening contact with two reed switches; additional NC input

Radio Range

Up to 1,200 m in open space

Battery Life

Up to 7 years

Hub Requirements

Compatible Ajax hub required

Operating Temperature

-10 to +40 C

FAQs

Yes, on DoorProtect U it can go on the left or right. Use only one magnet on one side at a time.

It detects opening through the magnetic contact. It is not a glass-break, shock or tilt detector.

A configured Chime function can notify through a compatible Ajax siren while the system is disarmed. The contact itself does not contain that siren.

The listed 103 x 22 x 21 mm dimensions are for the U detector body. The large magnet is the same size; the small magnet is 55 x 11 x 6 mm.

No. DoorProtect U is an alarm-system component and needs a compatible Ajax hub.

Tamper detection reports removal from the mounting panel. Device authentication and regular communication checks help identify interference or a missing detector.

Entry and exit delays can suit the way you use each door. A compatible Ajax siren can also chime when the door opens while the system is disarmed.

Use the supplied SmartBracket, holding screw and one appropriate magnet. Secure fixings and a tested detection zone matter more than simply placing the two parts close together.

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