Product Overview
For indoor spaces where both humans and pets are present, a single-technology PIR detector often falls short. The HiLook HA-ALARM-PIR2-AUS addresses this by combining passive infrared sensing with 24GHz microwave technology, requiring both to trigger simultaneously before raising an alarm. This dual-technology approach dramatically reduces nuisance activations caused by air conditioning drafts, heat sources, or small animals. With a 12-metre detection range, an 85.9-degree field of view, and 52 detection zones including a dedicated creep-zone layer, it covers open-plan rooms, hallways, and reception areas without leaving blind spots near the base of the detector. The 30kg pet immunity threshold means cats and most medium-sized dogs move freely without triggering false alerts. Digital temperature compensation keeps performance consistent as ambient room temperatures shift, and sealed optics block insect intrusion that can cause unwanted activations. It wires into a wide range of alarm control panels through selectable EOL resistors, making it suitable for both new installations and upgrades to existing wired systems.
Key Capabilities
Dual-Technology Detection
PIR and 24GHz microwave must both detect motion before an alarm is triggered. This cross-verification approach filters out single-source triggers like warm air currents or heat from appliances, producing a far more dependable alarm signal in lived-in and working indoor spaces.
30kg Pet Immunity
Animals weighing up to 30kg pass through the detection zone without triggering an alarm. This allows the detector to be installed at standard wall heights in pet-friendly homes, offices, and retail spaces without requiring the sensitivity to be dialled down, which would reduce human detection coverage.
52-Zone 3D Fresnel Optics with Creep-Zone
The 3D Fresnel lens creates 52 individual detection zones across the full coverage area, including a dedicated creep-zone layer near floor level. This prevents an intruder from avoiding detection by crouching or moving slowly directly beneath the detector, a known vulnerability in basic single-lens designs.
Digital Temperature Compensation
PIR sensitivity can degrade as room temperature approaches body temperature, reducing the contrast the sensor relies on. Digital temperature compensation actively adjusts the detection threshold in real time, maintaining consistent human detection across the full rated operating range of -10°C to 55°C.
Sealed Optics and Tamper Protection
Sealed optics block insects from entering the lens housing, preventing them from triggering false alarms by moving across the sensor. An integrated tamper switch generates an alert if the detector cover is removed or the unit is physically disturbed, helping ensure the sensor remains operational and unmodified.
Best For
- Pet-Friendly Homes: The confirmed 30kg pet immunity threshold allows installation at standard heights without generating false alarms from cats or medium-sized dogs moving freely through monitored rooms.
- Open-Plan Offices and Reception Areas: The 12-metre range and 85.9-degree field of view cover wide indoor zones from a single mounting point, reducing the number of detectors required in larger rooms.
- Environments with Variable Temperatures: Digital temperature compensation keeps detection consistent in spaces where HVAC systems, server rooms, or seasonal changes cause significant ambient temperature variation.
- Wired Alarm System Upgrades: Selectable EOL resistors make this detector compatible with a range of existing wired control panels, allowing it to be added to or replace sensors in established installations without requiring panel replacement.
Why Choose the HiLook HA-ALARM-PIR2-AUS
A standard single-technology PIR detector operates on infrared heat alone, which makes it susceptible to false alarms from changing temperatures, sunlight movement, or airflow. The HA-ALARM-PIR2-AUS raises the bar by requiring both PIR and 24GHz microwave to detect simultaneously, making spurious triggers far less likely in real-world indoor environments. The 52-zone 3D Fresnel lens with dedicated creep-zone coverage addresses a specific security gap that basic detectors leave unprotected at floor level. Combined with digital temperature compensation and sealed insect-resistant optics, this detector maintains its stated detection performance across variable conditions rather than relying solely on ideal installation environments. Selectable EOL resistors give installers flexibility across different panel brands and configurations. Available through Security Wholesalers, the HA-ALARM-PIR2-AUS represents a considered step up from entry-level PIR sensors for installers and end users who need fewer false call-outs and consistent after-hours protection.
Buyer Decision Tips
Mounting Height Matters: This detector is rated for wall mounting between 1.8m and 2.4m. Installing outside this range affects both detection coverage and the effectiveness of the pet immunity feature. If ceiling mounting is required, an optional wall and ceiling bracket accessory is available separately. Confirm bracket availability with your supplier before planning ceiling-mounted installations, and verify the finished height stays within the rated window to keep the 30kg pet immunity performing as specified.
Key Features & Technical Specifications
| Detection Technology |
Dual-technology: PIR and 24GHz microwave |
| Detection Range |
Up to 12 metres |
| Field of View |
85.9 degrees |
| Detection Zones |
52 zones via 3D Fresnel lens, including creep-zone protection |
| Pet Immunity |
Up to 30kg |
| Transmission Method |
Wired |
| Power Supply |
9 to 16 VDC (typical 12 VDC) |
| Power Consumption |
17mA maximum and quiescent at 12 VDC |
| Operating Temperature |
-10°C to 55°C |
| Storage Temperature |
-20°C to 60°C |
| Operating Humidity |
10% to 90% |
| Dimensions (W x H x D) |
65.7mm x 103.8mm x 45.5mm |
| Weight |
99g |
| Mounting Method |
Wall (optional ceiling bracket accessory) |
| Mounting Height |
1.8m to 2.4m |
| Application Scenario |
Indoor |
| EOL Resistors |
Selectable, for compatibility with various control panels |
| Additional Features |
Digital temperature compensation, sealed optics, tamper protection, polarity reverse connection protection |
Ideal Use Cases
Living Rooms and Hallways with Pets
The 30kg pet immunity threshold covers most household cats and medium-to-large dogs, allowing after-hours arm-away setups without restricting where pets can move. The 12-metre range and wide field of view cover typical open-plan living areas from a single corner mounting point.
Office Reception and Open-Plan Work Areas
The 85.9-degree field of view and 12-metre reach allow a single unit to cover a reception desk, waiting area, or open office floor. Wall mounting at 1.8m to 2.4m suits standard commercial ceiling heights without requiring additional brackets in most fitouts.
Retail Stockrooms and Storage Areas
After-hours monitoring of stockrooms and storage areas benefits from dual-technology confirmation, reducing call-outs caused by temperature fluctuations from refrigerated units or HVAC cycling. The tamper protection feature alerts if the detector is physically interfered with during a break-in attempt.
School Corridors and Classrooms
Long corridors and rectangular classrooms suit the directional 12-metre range. Digital temperature compensation maintains consistent detection performance across rooms that heat up significantly during the day and cool overnight, ensuring the detector does not under-perform at elevated ambient temperatures.
Healthcare and Pharmacy Spaces
Sensitive storage areas such as medication dispensaries and records rooms require a detector that will not false-alarm due to temperature variations from equipment or HVAC changes. The dual-technology design and digital compensation address exactly these environmental factors in a compact 99g wall-mount form factor.
Choosing the Right Model
- Choose this model if: You need to cover a medium-to-large indoor space where pets are present and false alarms from temperature change, insects, or air movement are a known problem. The dual-technology confirmation requirement and 30kg pet immunity make it the right choice when call-out reduction is a priority alongside reliable human detection.
- Choose a different model if: Your installation is outdoors, as this detector is rated for indoor use only. If you need wireless connectivity to an alarm panel rather than a wired connection, a wireless PIR sensor would suit the installation better. If the detection area is a narrow corridor under 6 metres, a standard curtain-pattern PIR may provide more focused coverage at lower cost.
FAQs
- How does dual-technology detection reduce false alarms compared to a standard PIR?
A standard PIR triggers on infrared heat changes alone. The HA-ALARM-PIR2-AUS also monitors movement using 24GHz microwave sensing. Both technologies must detect simultaneously for an alarm to be raised. A drifting air current may affect the PIR reading but will not register on the microwave channel, so no alarm is triggered. This cross-verification step is the core reason dual-tech detectors generate significantly fewer nuisance activations.
- Will my 20kg dog trigger this detector?
The HA-ALARM-PIR2-AUS is rated for pet immunity up to 30kg, so a 20kg dog moving through the detection zone should not trigger an alarm when the detector is mounted within the specified 1.8m to 2.4m height range. Correct installation height is important because mounting outside this range changes the angle at which the Fresnel lens reads pet-height movement, which can affect how immunity is applied.
- What does creep-zone protection mean in practice?
Standard detectors can have a blind spot close to the floor directly beneath the unit. The 3D Fresnel lens in the HA-ALARM-PIR2-AUS includes a dedicated creep-zone detection layer that covers this low-level area. This prevents an intruder from avoiding detection by crouching or crawling under the main detection field, which is a known tactic for defeating basic PIR sensors.
- Which alarm panels is this detector compatible with?
The HA-ALARM-PIR2-AUS is confirmed compatible with the Hikvision AX Hybrid PRO wired alarm system. Selectable EOL resistors provide compatibility with a broader range of wired alarm control panels from other manufacturers. Check your panel’s zone input requirements and match the appropriate EOL resistor value during installation.
- Can this detector be ceiling mounted?
The primary mounting method is wall mounting at heights between 1.8m and 2.4m. An optional wall and ceiling accessory bracket is listed in the product data, which enables ceiling installation. The bracket is not included in the box and must be sourced separately. Confirm bracket availability through Security Wholesalers before specifying a ceiling-mount design for this detector.
- Does the sealed optics feature actually make a measurable difference?
In warm or humid indoor environments, small insects can enter the lens housing of unsealed detectors and move across the sensor surface, creating a heat differential that registers as a detection event. Sealed optics physically prevent insect entry, removing this trigger source entirely. In areas such as kitchens, server rooms, or buildings with regular pest activity, this is a practical advantage over basic unsealed PIR units.
Product Video Samples
Additional Information
