Ajax Magnetic contact for wireless door / window alarm 868Mhz B

Ajax Magnetic contact for wireless door / window alarm 868Mhz B

AJ-DOORPROTECT-B / AJDPN DoorProtect Black Wireless magnetic door and window detector 868Mhz Wireless , bidirectional, internal antenna, anti tampering, battery power, grade 2, support included. Black Version


Brand: Ajax

EAN: 0856963007040


€67.10 -35%
taxes included
Tax included
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Contatto magnetico apertura porte e finestre
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Prodotto Ajax


Wireless opening detector that signals the first signs of intrusion from a broken door or window. It can be mounted on all types of doors, including a metal base. AJ-DOORPROTECT-B AJDPN

Main features:

♦ Bidirectional wireless wireless door / window opening detector - Ajax
Compatible with AJ-BATTERYX5
♦ 868MHz Jeweler protocol
♦ 1 wired input
Anti Tampering
♦ Suitable for indoor environments
♦ Battery powered
♦ Support included
3 year guarantee

I sistemi ajax sono muniti di batterie?


All alarm products in the Ajax range are already equipped with batteries!
Out of the box they are ready for use!

Product details

Ajax - perché scegliere gli allarmi Ajax


Ajax is synonymous with quality and ease of use.
All Ajax products take advantage of the latest wireless wireless technology and are programmed directly from smartphones or PCs.

Thanks to the User and Pro applications , it is possible to have complete virtual control of the entire alarm system, 24 hours a day.

Here is the real difference from the other competitors!

With a few simple touches , you can:

♦ Arm / Disarm the alarm

♦ Have instant notifications

♦ Have detailed information on the status of the device

♦ Carry out remote tests and configurations

♦ Automatic updates


Gestione dell'impianto d'allarme da remoto con APP USER E PRO di AjaxAjax Security System Applicazione Mobile

Rivelatore universale di apertura porte e finestre

Ajax DoorProtect - Magnetic door / window contact | AJ-DOORPROTECT-B

Device capable of detecting the opening of doors and windows

- Universal detector

- Recognizes the opening of doors and windows, even on different floors

- Miniaturized dimensions for greater compatibility with the fixtures

- Works up to 2,000 meters from the HUB

- Possibility to connect an outdoor detector via wired input

- The reed contact can be activated more than 1,000,000 times without any failure

- Bidirectional communication with the HUB for checks and personalization

- Power adjustable according to the distance from the HUB to save energy

- Jeweler 868MHz communication protocol

- Detector response controlled every 12-300 seconds (settable)

- Connects to the Ajax Hub with a simple switch and with the help of QR codes

- Can work with a third party security system via the uartBridge and ocBridge / ocBridge Plus modules

- Equipped with anti-tamper tamper

- Recognition of radio interference

- Encrypted communication

- The magnet has a power that allows installation up to 20 mm from the main unit

- Power supply: CR123A battery

- Supply voltage 3V

- Battery life 7 years

- Equipped with support

- Black colour

- Dimensions: 20 x 90 mm

Data sheet


868 MHz Jeweler

Security level

Grade 2

Transmission Distance

1200 m in open space

LEDs Alarm, Tamper, Signal
Cover material ABS plastic
Battery 1 battery CR123A 3.0 V (up to 7 years)
Working Temperature 0º C ~ 50º C
Transmitter dimensions 90 mm (Fo) x 20 (Ø) mm
Magnet dimensions 90 mm (Fo) x 20 (Ø) mm

Further details


The device detects the opening of a door or window thanks to the internal reed and the action of the magnet.

It can work in transmitter mode, sending a signal from the wired sensor to the HUB.



The device consists of 2 modules - detector and magnet.

The set includes two magnets: the large magnet is installed at a distance of 2 cm and the small magnet up to 1cm

Contatto magnetico apertura porte / finestre


Ready to be used, when it is still in the box: the battery is already installed, so it is not necessary to disassemble the detector. With a click, it can be connected to the HUB through the mobile application.

It can be mounted on the SmartBracket in minutes.


Brochure (Italian)


Ajax Systems

Established in 2011, Ajax manufactures wireless alarm and fire systems with JEWELER wireless technology that allows you to securely monitor all connected network devices. Ajax offers solutions for the home, office or commercial activities, manageable through the App, always updated and compatible with iOS and Android systems. Ajax devices are easy to install, in fact it only takes 15 seconds to connect the control unit to the sensors. They can also be integrated with surveillance cameras, have an almost zero error margin and, in the event of danger, send a notification in less than 150 milliseconds (sms, push or call).

Ajax alarm systems exploit a latest generation wireless technology that makes all products reliable and always connected. In addition to their excellent performance, Ajax systems stand out for their modern and elegant design.

All our products are in conformity with the in force CE normative (read here). To ask for a copy of the certification fill out this form

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