- Installation: Indoors
- Activation threshold: Small Magnet - 1 cm
- Up to 1200m in an open space (in a perfect environment)
- Operating frequencies - 868.0 - 868.6 MHz
- Power supply: CR123A battery (pre-installed)
- Battery life: up to 5 years
- Dimensions: Diameter - 20 mm, Height - 90 mm
Manufacturer overview
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.
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.
Enhanced security with additional detectors. DoorProtect Jeweller features terminals for connecting any third-party wired detector with an NC contact type 3 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.
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.
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.
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.
Specifications
| Frequency bands |
866.0–866.5 MHz |
| Maximum effective radiated power (ERP) |
up to 20 mW |
| Radio signal modulation |
GFSK |
| Radio signal range |
up to 3,900 ft |
| Sensitive element |
1 reed switch |
| Magnets |
small and big one come in the set |
| Protection against spoofing |
device authentication |
| Communication loss detection |
after 36 s |
| Battery |
1 × CR123A |
| Type |
type C |
| Calculated battery life |
up to 7 years |
| Device’s nominal operating voltage |
3 V⎓ |
| 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⎓ |
| Low battery recovery voltage |
2.7 V⎓ |
| End-of-life battery voltage |
2.1 V⎓ |
| End-of-life battery capacity |
300 mAh |
| Manufacturer |
Huiderui |
| Protection class |
IP50 |
| Detector dimensions |
3.54″ × 0.79″ × 0.79″ |
| Dimensions of the big magnet |
3.54″ × 0.79″ × 0.79″ |
| Dimensions of the small magnet |
2.16″ × 0.43″ × 0.24″ |
| Detector weight |
1.02 oz |