Gemini GEM-PIR
The Gemini GEM-PIR is a motion sensor designed for security and surveillance systems. Offering accurate detection of movement, it helps enhance security in residential and commercial spaces. Its advanced technology ensures reliable performance, minimizing false alarms while optimizing energy efficiency in lighting and HVAC systems.
Key Features
- Broad 50′ × 50′ coverage area
- Signal‑selective processing for fewer false alarms
- 11 interchangeable lens options
- Auto‑temperature compensation feature
- EMI/RFI protected, fully shielded circuitry
- Long‑life lithium batteries included
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Description
The Gemini GEM‑PIR is designed to address a common challenge in intrusion protection: achieving reliable motion detection without frequent false alarms or complicated installation. With its broad 50′ × 50′ detection zone, the unit covers large rooms or open‑plan spaces effectively, reducing the number of sensors required. Radwell International+4napcosecurity.com+4warshauer.com+4 Its signal‑selective processing algorithm and EMI/RFI‑shielded circuitry mean it’s less susceptible to disturbances from electrical noise, HVAC systems or other equipment — translating into fewer nuisance triggers and less maintenance. napcosecurity.com+1 The availability of 11 interchangeable lenses allows installers to tailor the coverage pattern — optimizing detection in corridors, offices, or irregular spaces. id-enhancements.com+1 For retrofit projects, the GEM‑PIR’s wireless‑friendly configuration and included lithium batteries make installation fast and cost‑efficient compared to hard‑wired PIRs. Compared to many standard detectors that offer fixed optics and less immunity to interference, this model stands out with its flexibility, advanced processing and broad coverage. For your home automation, commercial security, or multi‑zone installation, the GEM‑PIR offers a practical, professional‑grade solution.xcQ1a
Specifications
- Coverage area: Approximately 50′ × 50′ (15.2 m × 15.2 m) at 20 °C mounting height. napcosecurity.com+1
- Operating temperature: 0° to +50 °C (32° to 122 °F). napcosecurity.com
- Dimensions: 4.5″ × 2.5″ × 1.7″ (11.4 cm × 6.4 cm × 4.3 cm). napcosecurity.com
- Weight: Approx. 6.4 oz (181 g) shipping weight. napcosecurity.com
- Lens options: 11 interchangeable lenses for different coverage patterns. napcosecurity.com+1
- Processing: Signal‑Selective Processing mode; fixed 2‑pulse bipolar mode available (jumper configurable) for long‑range lens. napcosecurity.com
- Tamper protection: Built‑in tamper microswitch (cover/board tamper). napcosecurity.com
- Mounting: Wall or corner mount; push‑through holes in rear case for mounting. napcosecurity.com
- Power source: Two 3‑volt lithium batteries (CR123A or equivalent) included. Low‑battery transmission supported. napcosecurity.com
- Interference immunity: EMI/RFI protected with fully‑shielded SMD circuitry. napcosecurity.com+1
- Compatibility: Designed for use with Gemini wireless systems / wireless receivers. napcosecurity.com
For customers in Bangladesh, please contact your local distributor for a Bangladesh‑specific quote including import duties, shipping and installation—pricing depends on quantity, exchange rates and delivery terms, so obtain the latest offer directly.

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