DoorProtect Jeweller

Name: DoorProtect Jeweller
Brand: Ajax
Rating: 4.7 (9681 reviews)

Wireless reed-switch opening detector

Guardian for doors, windows, and valuables

DoorProtect Jeweller is a wireless opening detector designed to secure doors, windows, and skylights by detecting intrusion or burglary attempts. It features a British-made reed switch rated for over 2 million openings. The detector comes with magnets of two sizes for flexible installation even on narrow window and door frames. DoorProtect Jeweller is powered by a pre-installed battery, ensuring operation for up to 7 years.

Durable reed switch

in a plastic capsule

Protection from contact chatter

to prevent false alarms

Chime¹ feature

More installation options

with 2 magnets included

Up to 7 years of operation

on a pre-installed battery

Remote control and configuration

Terminals to connect a third-party detector with an NC contact type

2 colors

of glossy enclosure

Informative push notifications

10:00

Critical

Ajax

Office: Opening detected, DoorProtect Jeweller in Entrance

10:00

Ajax

Home: The device detached from the surface, DoorProtect Jeweller in Hall

Up to 3,900 ft

of wireless communication with an Ajax hub or range extender²

Jeweller radio communication

Power adjustment

Hassle-free installation

QR code

SmartBracket

App

Device compatibility

Check

In an Ajax system, you can combine devices of all product categories: Intrusion protection (both Superior and Baseline), Video surveillance, Fire and life safety, or Comfort and automation. Create the system to suit your needs and manage it in a single interface.

Wherever there is a risk of intrusion

Office or coworking space

Store

Restaurant

Warehouse

Food truck

School

Hospital

Barbershop

Private house or apartment

Future-proof hardware

Reed switch in a plastic capsule

Two magnets of different sizes for more installation options

Jeweller antenna

Tamper to detect attempts to dismantle the device from the surface or mounting panel

Pre-installed battery

Terminals to connect a third-party detector with an NC contact type

SmartBracket mounting panel with fixing points

High-end reed switch for reliable detection

The core functional component of DoorProtect Jeweller is a reed switch — a small flask housing an open contact group. Encased in a durable plastic capsule, the reed switch ensures decades of reliable operation and remains unaffected by drops or transportation.

Effective detection with the magnet on the right

Plastic capsule to protect the reed switch

Enhanced security with additional detectors

DoorProtect Jeweller features terminals for connecting any third-party wired detector with an NC contact type³ to enhance the reliability of the entire system. For example, an additional opening detector with a different operating principle can be integrated, or even a motion or vibration detector. When connected to DoorProtect Jeweller, these devices can raise alarms either independently or along with the opening detector.

Opening detector

Vibration detector

Motion detector

Never miss a visitor

The Chime feature transforms an Ajax opening detector along with an Ajax siren into a traditional doorbell. When the system is disarmed, the siren notifies users about doors being opened with one of four available short beep patterns. PRO users can adjust the signal volume and assign different patterns to each entrance, making it easy to recognize which door was opened.

Sound signals for opening doors

3 adjustable volume levels⁴

Distinctive sound patterns for separate entrances

The system must include a siren for the Chime feature to work.

All Ajax sirens

Wire-free flexibility and stellar performance

DoorProtect Jeweller powered by the pre-installed CR123A battery for a hassle-free wire-free setup. While these batteries undergo real-time testing during production, Ajax Systems additionally inspects every unit to verify the accuracy of its characteristics. The battery is easily replaceable and offers up to 7 years of autonomous operation. Battery status is always accessible in an Ajax app, with users and the monitoring company receiving low power warnings months in advance.

Real-time testing during battery production

Up to 7 years of autonomous operation

Low battery notifications in advance

Jeweller

Unique wireless technology

Jeweller is Ajax’s proprietary radio protocol for secure two-way communication. It provides a block cipher and device authentication during each communication session with an Ajax hub or range extender. Jeweller prevents sabotage, spoofing, and data theft.

Learn more

Up to 3,900 ft of communication range²

Encrypted two-way radio communication

Notifications about jamming and communication loss

Automatic power adjustment

Long-range performance

For complex radio signal conditions, the ReX Jeweller range extender boosts the range of all Ajax devices and manages their communication with the hub via Jeweller. And ReX 2 Jeweller assures stable communication even through steel and concrete via Ethernet using the wire as the additional communication channel. Up to 5 range extenders can operate within one Ajax system to expand the network twice as big, covering multistory buildings with underground parking and basements.

Up to 5 range extenders within one system

Ethernet as an alternative communication channel

System supervision

All Ajax devices perform automatic self-diagnosis and report their states to the hub. Essential parameters, including tamper, communication, power supply, and sensor states, are continuously monitored. The Ajax Cloud server controls communication between the hub and Ajax apps, ensuring instant notifications for security companies and users. If there is any malfunction or communication failure, an engineer will be immediately informed to provide the necessary services.

Automatic device self-diagnosis with status report

Regular polling to display the current device state on apps

Instant maintenance notifications

Sabotage resistance

Tamper alarm

The detector contains a tamper that activates an alarm if the device is removed from the surface or mounting panel. The system instantly notifies the security company and users of any intrusion attempts.

Data encryption

All data the system stores and transmits is protected by block encryption featuring a dynamic key. This encryption deters intentional sabotage attempts on the detector.

Informative notifications

Both the monitoring station and security system users instantly receive notifications about events. The information provided includes time, device name, event type, and room location.

Regular polling

The device regularly exchanges data with the hub. The system controls each device state and reports if there is a malfunction or connection loss.

Device authentication against spoofing

The hub checks the detector’s unique parameters for authentication during each communication session. If any parameter fails the check, the hub ignores device commands.

Connection loss detection

With the minimum polling interval settings (3 data packages every 12 seconds), it takes only 36 seconds to detect connection loss and notify the security company and users of the incident.

Effortless installation and setup

DoorProtect Jeweller is ready to operate straight out of the box. Using the SmartBracket panel, an installer can effortlessly mount the device, eliminating the need to disassemble the enclosure. Ajax apps help quickly make the device a part of the system: simply pair the device with the hub by scanning the QR code. It can always be reconfigured remotely without the need for on-site visits.

Pairing with the hub via QR code

SmartBracket panel — no need to disassemble the enclosure

Configuring and testing in mobile and desktop apps

PRO Desktop app for macOS and Windows

The Chime feature requires an Ajax siren to operate. Learn more about Chime.

In an open space.

DoorProtect Jeweller cannot power a third-party detector. The power supply for such a detector must be connected separately.

⁴

To use the Chime feature, at least one siren must be added to the system.

Technical information

DoorProtect Jeweller

More DoorProtect detectors

Superior DoorProtect Jeweller

Wireless opening detector with two reed switches. Superior edition

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Superior DoorProtect Fibra

Wired opening detector with two reed switches

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Superior DoorProtect G3 Fibra

Opening detector with shock, tilt, and magnetic masking sensors

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DoorProtect Plus Jeweller

Wireless combined opening, shock and tilt detector with reed switch and accelerometer

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Superior DoorProtect Plus Jeweller

Wireless combined opening, shock, and tilt detector with two reed switches and accelerometer. Superior edition

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Product is not available in your region

Ajax product categories

Intrusion protection

Video surveillance

Fire and life safety

Comfort and automation

Wireless opening sensor Ajax DoorProtect

Reed switches or sensors for opening doors and windows are used to protect the premises from intrusion. Such sensors determine the opening of doors, hatches, windows and other elements. A reed switch is a sealed switch that operates based on ferromagnetic spring contacts. The principle of operation of the reed switch is as follows:

Two plates of nickel and steel are placed in a sealed glass flask.
A magnetic field is created in the flask, which causes the plates' interaction and the sensor's operation.

How to choose a door open sensor for alarm

Before choosing an opening sensor, users need to familiarize themselves with its types and operating parameters.

Opening sensors by installation method

Door opening sensors can be mortised or overhead. Installing a mortise reed switch requires special tools and takes time. A sensor with this type of installation is almost invisible in the interior. Overhead reed switches are attached using self-tapping screws or double-sided tape and are easy to install. Opening detectors of this type are exposed to external influences and are noticeable in the interior; this is a disadvantage for security devices.

Opening sensors by type of mounting surface

Window or door opening detectors are installed on plastic, wood or metal. A metal surface reacts to a magnet, like a reed switch, so for metal objects — doors, gates, it is important to choose the appropriate detectors. Metal heats up and cools down more than plastic or wood, so an improperly selected reed switch may stop working due to the temperature. Each reed switch has a minimum and maximum operating temperature limit for uninterrupted operation. It must be taken into account before installing the opening sensor.

By response time

The sensors for opening doors and windows contain the response speed of the device. And the likelihood of catching an intruder is higher if the alarm goes off immediately.

By connection type

Window and door opening sensors for alarms can be wired or wireless. Wired devices are connected to the security system's control panel or GSM alarm system using two cables. Wireless opening detectors report tampering via radio connection and do not require wires.

By place of installation

There are opening sensors for indoor installation and outdoor. Reed switches in a metal case are suitable for outdoor installation on gates. They are protected from the external environment. When choosing a door sensor for an indoor facility, its temperature range must be considered. For example, the window opening sensors are installed on a south-facing window. Users need to consider that in summer, the frame can heat up to 50 °C or more. This may affect the correct operation of the window opening sensor for the alarm.

Signal transmission radius

The signal transmission radius from the opening sensor for signalling to the security unit can be 80 m to 500 m.

Limit number of operations

It depends on the frequency of opening the window or door installed on the opening sensor. The more actively the detector is used, the higher the indicator.

Standby conditions

When choosing an opening sensor for signalling, it is necessary to consider the distance between the surfaces on which it will be used, that is, between the contact and driving parts of the reed switch. If the actual distance is higher than in the technical characteristics of the opening detector, then the reed switch will not work.

Conditions for triggering the alarm mode

The distance between the installation location of the opening sensor for signalling and possible false alarm triggers must be taken into account. If the "margin" of the distance is small and the opening detector is installed on the gate, vibration from a passing car will probably trigger a false alarm. The sensitivity of the opening sensor must correspond to the object on which the installation takes place.

Opening sensor body colour

It is important to choose door and window opening sensors in the colour of the surface on which the device is installed. Thus, the probability that the opening detector will be disabled will decrease, the reed switch will become less visible to an attacker.

Caring for opening sensors

Alarm door detectors do not require special care. They are durable, and the number of valid operations can exceed a million. Sensors that operate on battery power require battery replacement every few years.

Wireless sensor for opening windows and doors Ajax DoorProtect

The indoor unit opening sensor detects intrusion and reports opening a door or window. They are mounted on all kinds and types of objects. The Ajax DoorProtect wireless opening sensor protects private spaces, public areas, industrial premises, etc.

The principle of operation of the Ajax DoorProtect wireless opening sensor

The Ajax DoorProtect alarm detector for opening doors and windows is designed to detect unauthorized openings when the premises are armed. A block triggers the opening sensor with a reed switch and a magnet. The principle of operation of a wireless opening detector is based on the properties of a reed switch. This part becomes a signal conductor under the influence of a magnetic field. The wireless sensor comes with two magnets: large and small for installation up to 2 cm and 1 cm, respectively. In a state of calm, the magnet and the block with the reed switch are closed. When the door on which the detector is located is opened, the magnet moves away from the reed switch, the contacts open, and the reed switch interrupts the current supply. When the door closes, the magnet approaches the reed switch, the contacts close, and the reed switch conducts. In any case, the wireless opening detector is triggered and immediately sends an alarm signal to the alarm control panel. Hub, in turn, informs users about the incident and launches automated actions, depending on the settings. An English reed switch is installed in the opening sensor for the Ajax DoorProtect alarm. It does not stick and is designed for more than a million operations.

Features of Ajax DoorProtect wireless opening sensor

The Ajax DoorProtect wireless opening sensor works based on two-way radio communication, device forgery protection and information encryption. Also, the DoorProtect opening detector has a communication system that allows it to work within several floors of a building or at a distance of up to 1200 m to the central alarm panel, provided there are no obstacles. The Ajax DoorProtect opening sensor protects even windows that are open for ventilation. The accelerometer will detect shock, tilt or vibration and alarm the control panel.

Installation and assembly of the Ajax DoorProtect opening detector

The connection and configuration of the wireless opening sensor take place in the Ajax mobile application. The opening detector is mounted on the SmartBracket mount without disassembling the case. The battery is pre-installed and lasts up to 7 years without replacement.