BROJEN BJ-960 Wired PIR Sensor (Dual Passive Infrared, hard-wired)
Quick take
The BROJEN BJ-960 is a hard-wired dual passive infrared (PIR) motion detector meant for integration with existing alarm systems or occupancy-triggered automation. It includes practical configuration options like selectable NC or NO alarm output and an install-friendly LED toggle. The biggest buying caveat is that coverage can be tighter in real-world use, so it is best for smaller indoor zones or carefully chosen mounting locations.
Pros and cons
Pros
- Hard-wired DC 9–16V design, suitable for alarm or occupancy sensor circuits
- Selectable alarm output (NC/NO) using a PCB jumper, helpful for different host inputs
- Optional LED on/off control to better match the installation environment
- Built-in features aimed at reducing false alarms from electrical interference (per design description)
Cons
- Detection range and performance may feel inconsistent at longer distances for some indoor setups
- Installation requires wall mounting at the recommended height and angle, plus correct wiring to the alarm host
What buyers think
Buyer feedback focuses less on cutting-edge features and more on whether the detector works as a practical replacement or retrofit. Multiple comments describe it as a straightforward swap that can help when a previous hard-wired motion sensor stopped working. Buyers also highlight its wiring flexibility, especially the NC/NO jumper output option, which can make it easier to connect to different alarm or automation inputs without major rewiring.
There is limited but relevant concern around coverage, with some buyers noting that motion detection could become sporadic beyond short ranges in their environment. Overall, the available review evidence supports the idea that this is a capable, value-oriented PIR for hard-wired setups, as long as you mount it thoughtfully for the space you are protecting.
Key features that matter for buyers
Dual PIR motion sensing with designed false-alarm handling
This is a dual passive infrared detector intended to sense changes in infrared energy when a person moves within its field of view. The design description also emphasizes automatic temperature compensation and strategies to help with high-frequency interference (for example, electrical noise from common household sources). While no motion detector can eliminate every false trigger in every environment, the intent here is to make the unit more stable in typical indoor installations.
Hard-wired power and alarm output matching
The detector runs on DC 9–16V and is wall-mounted. A major practical advantage for retrofit projects is the alarm output configuration: you can choose normally closed (NC) or normally open (NO) via a PCB jumper. That lets you match the signaling behavior expected by many alarm control panels and occupancy sensing inputs.
Adjustable behavior via pulse count selection and LED toggle
The unit includes pulse counting behavior that can be set to first-stage or second-stage pulse count (with a factory default). This matters if you are trying to tune responsiveness for different “harsh environment” conditions. There is also an LED indicator option that can be turned on or off using a PCB jumper, which can be useful if you prefer a less noticeable indicator during operation.
Setup and installation considerations
- Mounting height and angle: The recommended installation height is about 2.2 m (around 7.2 ft), and the detector should be set at a slight angle to the wall (about 6–12 degrees).
- Avoid heat sources and airflow changes: The installation guidance advises avoiding objects that create temperature changes in the detection area, such as HVAC, fans, refrigerators, ovens, and windows.
- Keep the lens area clear: Obstructions in front of the lens can interfere with detection.
Pros and cons (real-world fit)
Who it’s best for
- Homeowners or installers looking for a hard-wired dual PIR to replace an existing wired motion sensor
- Buyers who need NC/NO output flexibility to match an alarm panel or occupancy input
- People mounting indoors in a reasonably sized zone where you can place the detector at the recommended height and angle
Who should avoid it
- Shoppers who need wide coverage across large rooms or long hallways, especially if they cannot mount near the center of activity (some buyers report reduced reliability at longer distances)
- Anyone who wants a plug-and-play wireless device, since this model is designed for hard-wired installation
Is it worth it?
If you already have a wired alarm or occupancy system and you want a retrofit-friendly PIR that can be matched to different input types (NC or NO) without reworking the whole setup, the BROJEN BJ-960 is a reasonable option. The value case is strongest when you can mount it correctly and avoid placing it where HVAC airflow, direct temperature changes, or obstructions will trigger inconsistent behavior.
If your priority is maximum range and you cannot control mounting position, you may want to compare other motion detector options designed for longer coverage before committing.
Price and availability
Check current pricing and stock status on Amazon, since costs can change frequently.
FAQ
What is the detection range of the BROJEN BJ-960?
The detector’s stated detection distance is up to about 10 m (32 ft). Real-world performance can vary based on mounting height, angle, and environmental factors.
Does it support both NC and NO alarm outputs?
Yes. The alarm output can be configured as normally closed (NC) or normally open (NO) using a jumper on the PCB, intended to fit different alarm host inputs.
Is this a wireless motion sensor?
No. It is a hard-wired, DC 9–16V motion detector meant for direct wiring to an alarm or occupancy sensing system.
How high should I mount it?
The recommended installation height is about 2.2 m (approximately 7.2 ft). The detector should also be set at a slight angle (about 6–12 degrees) to the wall.
Will it trigger on pets?
The detector is designed to reduce alarms from pets by relying on human-motion infrared patterns processed through internal circuits and lenses. However, no PIR sensor is perfect for every home layout, so placement and avoiding heat sources still matter.
Can I turn off the LED indicator?
Yes. There is an LED on/off option that can be adjusted with a PCB jumper.
What conditions should I avoid during installation?
Avoid aiming it at sources of temperature change or airflow, including AC units, electric fans, refrigerators, ovens, and windows, and do not obstruct the lens area.
Specifications
| Product Title | Wired PIR Sensor Dual Passive Infrared Motion Detector Hard Wired for Existing Home Alam System or Occupancy Sensor |
|---|---|
| Category | Electronics > Security & Surveillance > Motion Detectors |
| Brand | BROJEN |
| Manufacturer | BROJEN |
| Model Number | BJ-960 |
| Color | White-BJ-960 |
| Item Weight | 0.09 Kilograms |
| Power Source | Corded Electric |
| Maximum Range | 10 Meters |
| Mounting Type | Wall Mount |
| Battery Description | Battery not included |
| Temperature Range | -1E+1 Degrees Celsius |
| Compatible Devices | [Home Alarm Systems] |
| Antenna Location | Banks, Warehouses, Homes |
| Frequency | 20 MHz |
| Mfr Part Number | BJ-960 |
Available variants
Color
- White-BJ-960
- White-BJ-980
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