At a glance
- Detection
- Sensitive element: 1 reed switch
- Power supply
- Battery: 1 × CR123A, Pre-installed
In the box
- DoorProtect Jeweller
- SmartBracket mounting panel
- CR123A battery (pre-installed)
- Big magnet
- Small magnet
- Outside-mounted terminal clamp
- Installation kit
- Quick start guide
Model DP.Y.JAjax DoorProtect Jeweller wireless opening detector, up to 7-year battery life
₹4,796 Incl. GST
₹4,064 + 18% GST
At a glance
- Detection
- Sensitive element: 1 reed switch
- Power supply
- Battery: 1 × CR123A, Pre-installed
Tells your Ajax alarm when a door or window is opened, using a small sensor and magnet fitted to the frame. Runs up to 7 years on one CR123A battery and has an input for a wired detector from another brand; works with an Ajax hub.
- WarrantyManufacturer warranty under Ajax's terms: 2 years. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
The Ajax DoorProtect Jeweller tells your Ajax alarm when a door or window is opened. A slim sensor on the frame and a magnet on the moving part work together: when the magnet moves away, the detector reports the opening to the hub by radio. It runs for up to 7 years on one battery and suits front doors, balcony doors and windows in a home, office or shop.
Is it right for you?
- Choose it for doors and windows you want the alarm to watch, indoors.
- Two magnets come in the box: the small one for gaps up to 1 cm, the big one for gaps up to 2 cm, so it suits most frames.
- It also has an input for a wired detector from another brand, so a wired sensor nearby can share its radio link.
- If you also want to know when a door is struck, forced or tilted, choose DoorProtect Plus.
Key features
- Reed switch sensor with a choice of small magnet (works up to 1 cm away) or big magnet (up to 2 cm).
- Ignores vibrations lasting up to 0.15 s, so a rattling door does not cause false alarms.
- Input for a wired detector with normally closed (NC) contacts.
- Chime: when the system is disarmed, the siren can sound a special tone each time the door opens.
- Jeweller radio to the hub or range extender up to 1,200 m in open space, encrypted with frequency hopping.
- Tamper alarm when it is taken off the wall or its mounting panel; communication loss reported after 36 s.
- One CR123A battery, pre-installed, rated for up to 7 years.
- 90 x 20 x 20 mm, 29 g, in black or white.
What else you need
An Ajax hub. Compatible hubs and range extenders include Hub (2G), Hub (4G), Hub Plus, Hub 2 (2G), Hub 2 (4G), Hub 2 Plus, Hub BP, ReX, ReX 2, Superior Hub G3, Superior Hub Hybrid, Superior Hub Hybrid 2, Superior MegaHub and Superior ReX G3.
The Ajax app, where it is added and configured.
Installation
An Ajax installer or a confident owner can fit it with the SmartBracket mounting panel. Fix the detector to the frame and the magnet to the moving part of the door or window, to the right of the detector where the arrow on the case points.
Use only one magnet; the detector recognises one magnet on one side.
Before you buy
Indoor use only, from -10 to 40 °C and up to 75% humidity, IP50.
Battery life is calculated and depends on how often the door is used.
Technical specifications
Key facts
- What is it?
- Door & Window SensorsBrand Ajax, model DP.Y.J
- How is it powered?
- Battery: 1 × CR123A, Pre-installed
- Can it be used outdoors?
- IP50
- What comes in the box?
- DoorProtect Jeweller; SmartBracket mounting panel; CR123A battery (pre-installed); Big magnet and 4 more
- Which documents are available?
- Datasheet, online manual, software (2), regional compliance reference (2), online specifications (3) Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
RelatedSolutionIntrusion alarm systemsGuideWireless alarm system guideDocumentsAll Ajax documents
- Manufacturer model
- DP.Y.J
- Detection
- Sensitive element: 1 reed switch; Magnets: small and big one come in the set (The small magnet operates at a distance of up to 1 cm from the detector, and the big magnet, up to 2 cm); Protection against reed switch chattering: (The detector ignores vibrations lasting up to 0.15 s); Input to connect an additional detector: (Wired detector with the normally closed (NC) contact type); Chime: (When the system is disarmed, the siren makes a special sound to notify that the opening detectors are triggered)
- Power supply
- Battery: 1 × CR123A, Pre-installed; Type: type C; Calculated battery life: up to 7 years, Device’s nominal operating voltage, 3 V DC, Quiescent device’s current consumption at nominal voltage, 17.5 μA, Maximum device’s current consumption at nominal voltage, 21.4 mA; Full battery capacity: 1,600 mAh; Low battery voltage: 2.5 V DC; Low battery recovery voltage: 2.7 V DC; End-of-life battery voltage: 2.1 V DC (Device is switched off); End-of-life battery capacity: 300 mAh, Manufacturer, Huiderui
- Enclosure
- Detector dimensions: 90 × 20 × 20 mm; Dimensions of the big magnet: 90 × 20 × 20 mm; Dimensions of the small magnet: 55 × 11 × 6 mm; Detector weight: 29 g; Operating temperature range: from -10 °C to +40 °C; Operating humidity: up to 75%; Protection class: IP50
- Warranty
- Manufacturer warranty under Ajax's terms: 2 years. How claims work
Product attributes and shipping details
| Brand | Ajax |
|---|---|
| Colour | Black, White |
| IP Rating | IP50 |
| Alarm Technology | Jeweller |
Downloads
Download software
- Ajax Security System (iOS)Version 3.59 · iOS 18.0+ · Released October 28, 2026Prerequisites: Compatible Ajax hub; Ajax account; Device is added to a compatible Ajax hub and configured in Ajax apps (hub required)Licence: Free; account requiredSoftware · Family · apps.apple.comView official download page
- Ajax Security System (Android)Android · Released November 9, 2026Prerequisites: Compatible Ajax hub; Ajax account; Device is added to a compatible Ajax hub and configured in Ajax apps (hub required)Licence: Free; account requiredSoftware · Family · play.google.comView official download page
Documentation
- DoorProtect JewellerDatasheet · Family · 1.1 MBDownload
- Ajax DoorProtect Jeweller product pageOnline specifications · Family · ajax.systemsView official page
- Ajax DoorProtect Jeweller technical specifications pageOnline specifications · Family · ajax.systemsView official page
- Ajax device compatibility with hubs and control elementsOnline specifications · General · ajax.systemsView official page
User manual
- Ajax DoorProtect Jeweller: Online manualOnline manual · Family · ajax.systemsView official page
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
How long does the battery last?
Up to 7 years on one CR123A battery, which comes pre-installed.
Which magnet should I use?
The small magnet for gaps up to 1 cm, the big magnet for gaps up to 2 cm. Never fit both.
Can I connect a wired sensor to it?
Yes, a wired detector with normally closed contacts can be connected to its input and reported through the same radio link.
Does it need an internet connection?
No. It talks to the hub by radio; the hub handles the internet connection.
Can it be used outdoors?
No, it is for indoor use only.
Which hubs does it work with?
Compatible hubs and range extenders include Hub (2G), Hub (4G), Hub Plus, Hub 2 (2G), Hub 2 (4G), Hub 2 Plus, Hub BP, ReX, ReX 2, Superior Hub G3, Superior Hub Hybrid, Superior Hub Hybrid 2, Superior MegaHub and Superior ReX G3.
Ask about this modelSetup, compatibility, what is in the box
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