At a glance
- Detection Distance
- 6 to 15 m
- Detection
- Sensitive element: 2 × PIR sensor
- Battery Life
- Up to 3 years
- Battery
- 1 × CR123A (pre-installed)
- Protection Class
- IP54
- Operating Temperature
- -10 °C to +40 °C
In the box
- MotionProtect Curtain Jeweller
- SmartBracket mounting panel
- Bracket
- Installation kit
- CR123A battery (pre-installed)
- Quick start guide
Model MP.C.JAjax MotionProtect Curtain Jeweller Wireless Curtain PIR Detector, 15 m
₹9,563 Incl. GST
₹8,104 + 18% GST
At a glance
- Detection Distance
- 6 to 15 m
- Detection
- Sensitive element: 2 × PIR sensor
- Battery Life
- Up to 3 years
- Battery
- 1 × CR123A (pre-installed)
- Protection Class
- IP54
- Operating Temperature
- -10 °C to +40 °C
Guards windows, doors and valuables indoors with a narrow curtain of detection that watches one line of approach rather than the whole room. Two PIR sensors, 6 to 15 m reach, 6° beam, up to 3 years on one CR123A; 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 MotionProtect Curtain Jeweller is a wireless indoor detector that watches a narrow vertical strip rather than a whole room. Fitted beside a window, a door or in front of a painting or display, it triggers the Ajax alarm when someone crosses that line, while people and pets elsewhere in the room are ignored. It suits perimeter protection in homes, shops and galleries on an Ajax system.
Is it right for you?
- It suits guarding windows, doors and valuables indoors, or a corridor that intruders must cross.
- Choose it when you want to arm the perimeter while people stay inside, for example at night.
- It is indoor only (IP54, -10 to 40 °C).
- For a whole room, a standard motion detector such as the MotionProtect covers a wide angle instead.
Key features
- Two passive infrared (PIR) sensors with a 6° horizontal and 90° vertical beam, so detection is a thin curtain.
- Range of 6 to 15 m at 2.4 m mounting height, depending on the sensitivity setting; 6 to 8 m with Correlation Signal Processing enabled for extra false alarm resistance.
- Detects movement at 0.3 to 2 m/s with three sensitivity levels set in the Ajax app.
- Pet immunity by installing the detector upside down, so the beam points away from the floor.
- Temperature compensation across -10 to 40 °C.
- One CR123A battery, pre-installed, with a calculated life of up to 3 years.
- Jeweller two-way radio with encryption and frequency hopping, up to 1,700 m to the hub or range extender in open space; tamper alarm and communication loss detection after 36 s.
- Supplied bracket for angled mounting; 134 × 44 × 34 mm without the bracket, 134 × 52 × 41 mm with it.
What else you need
An Ajax hub or range extender and the Ajax app. It runs on its own battery and needs no wiring.
Installation
Mount it indoors at 2.4 m on the SmartBracket panel or the supplied bracket, with the beam across the path an intruder would take through the window or door. Fit it upside down if pets are present. An Ajax installer can position it and set the sensitivity and Correlation Signal Processing in the app.
Software and licences
Sensitivity and Correlation Signal Processing are set in the Ajax app by an administrator or an Ajax PRO.
Before you buy
- Indoor use only.
- Enabling Correlation Signal Processing reduces range to 6 to 8 m.
- Choose black or white.
Technical specifications
Key facts
- What is it?
- Motion detectorBrand Ajax, model MP.C.J
- How is it powered?
- Battery: CR123A, Pre-installed
- Can it be used outdoors?
- IP54
- What comes in the box?
- MotionProtect Curtain Jeweller; SmartBracket mounting panel; Bracket; Installation kit and 2 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
RelatedGuideWireless alarm system guideDocumentsAll Ajax documents
General
- Manufacturer model
- MP.C.J
- Detection
- Sensitive element: 2 × PIR sensor; Motion detection distance: up to 6 to 15 m, up to 6 to 8 m (When installed at a height of 2.4 m, and the Correlation Signal Processing feature is disabled. It also depends on the sensitivity level adjusted in the device settings. When installed at a height of 2.4 m, and the Correlation Signal Processing feature is enabled. It also depends on the sensitivity level adjusted in the device settings); Motion detection angles: horizontal, 6°, vertical, 90°; Motion detection speed: from 0.3 to 2.0 m/s (The direction of the detector lens should be perpendicular to an alleged intrusion path into the facility); Sensitivity: 3 levels (Adjusted by PRO or user with admin rights in the Ajax app); Pet immunity: (Install the detector upside down to prevent it reacting to domestic animals); Temperature compensation: (Effective motion detection at temperatures from -10 °C to +40 °C)
- Frequency Bands
- 866.0 to 866.5 MHz, 868.0 to 868.6 MHz, 868.7 to 869.2 MHz, 905.0 to 926.5 MHz, 915.85 to 926.5 MHz, 921.0 to 922.0 MHz (depends on sales region)
- Maximum Effective Radiated Power
- Up to 20 mW
- Radio Range (Open Space)
- Up to 1,700 m
- Encryption
- Block encryption with dynamic key
- Frequency Hopping
- Yes
- Communication Loss Detection
- After 36 s (depends on Jeweller settings)
- Sensor
- 2 × PIR
- Detection Distance
- 6 to 15 m (installed at 2.4 m, depends on sensitivity setting)
- Detection Angles
- 6° horizontal, 90° vertical
- Detection Speed
- 0.3 to 2 m/s
- Sensitivity Levels
- 3
- Pet Immunity
- Install upside down to avoid reacting to pets
Input
- Power supply
- Battery: CR123A, Pre-installed; Type: type C; Calculated battery life: up to 3 years, Detector’s operating voltage range, 2.1-3.3 V DC, Detector’s nominal operating voltage, 3 V DC, Quiescent detector’s current consumption at nominal voltage, 41 μA, Maximum detector’s current consumption at nominal voltage, 60.4 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
- Battery
- 1 × CR123A (pre-installed)
- Battery Life
- Up to 3 years
Environment
- Operating Temperature
- -10 °C to +40 °C
- Protection Class
- IP54
Physical
- Enclosure
- Dimensions: 134 × 44 × 34 mm, with bracket, 134 × 52 × 41 mm; Weight: 118 g; Operating temperature range: from -10 °C to +40 °C; Operating humidity: up to 75%; Protection class: IP54
- Recommended Mounting Height
- 2.4 m
- Dimensions
- 134 × 44 × 34 mm (134 × 52 × 41 mm with bracket)
- Weight
- 118 g
- Colours
- Black, White
- Warranty
- Manufacturer warranty under Ajax's terms: 2 years. How claims work
Product attributes and shipping details
| Brand | Ajax |
|---|---|
| Colour | Black, White |
| IP Rating | IP54 |
| 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
- MotionProtect Curtain JewellerDatasheet · Family · 1.5 MBDownload
- Ajax MotionProtect Curtain Jeweller product pageOnline specifications · Family · ajax.systemsView official page
- Ajax MotionProtect Curtain 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 MotionProtect Curtain 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 is a curtain detector different from a normal motion detector?
Its beam is only 6° wide, so it watches a thin strip in front of a window, door or object instead of the whole room.
Can I keep it armed while people are at home?
Yes. Placed across windows and doors, it only reacts to someone crossing that line, so the rest of the room stays free to use.
Does it ignore pets?
Fit it upside down so the beam points away from the floor, and it will not react to domestic animals.
What power does it need?
One CR123A battery, pre-installed, with a calculated life of up to 3 years.
Can it be used outdoors?
No. It is designed for indoor use only. For outside, Ajax makes the Curtain Outdoor and DualCurtain Outdoor.
Does it need an internet connection?
No. It reports to your Ajax hub by Jeweller radio.
Ask about this modelSetup, compatibility, what is in the box
Answers are automated. Do not enter personal or account details.
Looking for an alternative?
We list alternatives only when we have checked they suit the same job. Compare other models in the category, or ask us to suggest one for your site.