--- product_id: 521511936 title: "Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair" brand: "real instruments" price: "Β£12.90" currency: GBP in_stock: true reviews_count: 1 category: "Real Instruments" url: https://www.desertcart.co.uk/products/521511936-single-beam-20-meter-light-radar-motion-sensor-door-window store_origin: GB region: United Kingdom --- # 1.92 kHz Frequency IP55 Waterproof Rating 20m Infrared Range Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair **Brand:** real instruments **Price:** Β£12.90 **Availability:** βœ… In Stock ## Summary > πŸšͺ Secure your space with invisible precisionβ€”because safety should never be out of sight. ## Quick Answers - **What is this?** Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair by real instruments - **How much does it cost?** Β£12.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/521511936-single-beam-20-meter-light-radar-motion-sensor-door-window) ## Best For - real instruments enthusiasts ## Why This Product - Trusted real instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **All-Weather Durability:** IP55-rated waterproof and dustproof design ensures uninterrupted protection rain or shine. - β€’ **Smart Light Adaptation:** Built-in strong light filter and automatic sensitivity boost in fog or bad weatherβ€”security that adapts. - β€’ **Advanced Signal Stability:** 1.92 kHz frequency with digital filtering resists interference for flawless alarm triggers. - β€’ **Effortless Pro Installation:** Clear step-by-step setup with optimal height and alignment for instant, professional-grade security. - β€’ **Long-Range Infrared Precision:** Reliable 20-meter detection keeps your perimeter secure with pinpoint accuracy. ## Overview This Single Beam 20 Meter Infrared Motion Sensor Alarm offers a robust 20-meter detection range powered by a 1.92 kHz frequency and 940 nm wavelength. Engineered with IP55 waterproof and dustproof materials, it guarantees reliable operation in harsh weather conditions. Featuring advanced digital filtering and automatic light adaptation, it minimizes false alarms from strong light sources and environmental factors. Ideal for professional security setups in offices, schools, and residential buildings, this pair of infrared detectors ensures seamless, high-sensitivity perimeter protection with easy installation. ## Description Product Description Motion Sensor SAFE AND RELIABLE : The Pair of Infrared Detectors Can Reliably Generate Visible Infrared Rays Up To 20 Meters Long. The Barrier Detector Frequency of the Single Beam Alarm Is 1.92 Khz, The Power Supply Is 12 V Dc and The Wavelength Is 940 Nm. WATERPROOF MATERIAL : IP55 Rain Cover (Fog), Dust (Worm), And Other Comprehensive Weather-related Sealed Structures, Infrared Detector Can Maintain Normal Operation in Harsh Environments. In Severe Weather (Fog, Rain, Dust, Etc.) The Range of the Infrared Detector Can Be Reduced To 30%. WIDE APPLICATION : The Infrared Detector Is Suitable for Security Systems in Schools, Office Buildings, Hospitals, Parking Lots, Apartments, and Other Places. The Barrier Detector is Widely Used in Alarm Systems, Access Control Systems, Etc. Single Beam Light Radar UNIQUE LOOK : High-power Transmitter, 90% Sensitivity Margin, High-power Infrared Transmitter-receiver Pair Tube, Low-power Processing Technology Lightning Protection Circuit. High Level of Rfi/emi Capability and Unique Digital Filter Circuit. ACTIVE REGULATION : Resistant to Strong Light Up To 50,000 Lux, Built-in Automatic Adjustment of a Strong Light Filter System, To Avoid the Impact of Strong Light or Car Lights. Moreover, The Detector Will Automatically Enhance Sensitivity When Encountering Heavy Fog or Bad Weather. (Agc Circuit) INSTALLATION : The Best Installation Height Should Be More Than 20 cm, Installation Distance Should Be Not Less Than 1 M; Infrared Protection Device Should Be Vertically Placed, And in The Same Horizontal Line. First, Please Install the Receiver, Then the Transmitter (When in A Straight Line, Off Light of Receiver Goes Out), Then fix, connect Line and Complete Installation. Review: Super - Super ## Features - βœ…γ€π’π€π…π„ 𝐀𝐍𝐃 π‘π„π‹πˆπ€ππ‹π„γ€‘πŸ˜πŸ˜ The Pair Of Infrared Detectors Can Reliably Generate Visible Infrared Rays Up To 20 Meters Long. The Barrier Detector Frequency Of The Single Beam Alarm Is 1.92 Khz, The Power Supply Is 12 V Dc And The Wavelength Is 940 Nm. - βœ…γ€π–π€π“π„π‘ππ‘πŽπŽπ… πŒπ€π“π„π‘πˆπ€π‹γ€‘πŸ’¦πŸ’¦ IP55 Rain Cover (Fog), Dust (Worm) And Other Comprehensive Weather-related Sealed Structures, Infrared Detector Can Maintain Normal Operation In Harsh Environments. In Severe Weather (Fog, Rain, Dust, Etc.) The Range Of Infrared Detector Can Be Reduced To 30%. - βœ…γ€π–πˆπƒπ„ π€πππ‹πˆπ‚π€π“πˆπŽπγ€‘πŸ’―πŸ’― The Infrared Detector Is Suitable For Security Systems In Schools, Office Buildings, Hospitals, Parking Lots, Apartments And Other Places. The Barrier Detector Widely Used In Alarm Systems, Access Control Systems, Etc. - βœ…γ€π”ππˆππ”π„ πƒπ„π’πˆπ†πγ€‘πŸ’’πŸ’’ High-power Transmitter, 90% Sensitivity Margin, High-power Infrared Transmitter-receiver Pair Tube, Low-power Processing Technology Lightning Protection Circuit Design.high Level Of Anti Rfi/emi Capability And Unique Digital Filter Circuit Design. - βœ…γ€πˆππ’π“π€π‹π‹π€π“πˆπŽπγ€‘πŸ’₯πŸ’₯ The Best Installation Height Should Be More Than 20 cm, Installation Distance Should Be Not Less Than 1 M; Infrared Protection Device Should Be Vertically Placed, And In The Same Horizontal Line.first, Please Install The Receiver, Then The Transmitter(When In A Straight Line, Off Light Of Receiver Goes Out), Then Fix,connect Line And Complete Installation. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C1SG91WY | | Best Sellers Rank | #31,540 in Home Improvement ( See Top 100 in Home Improvement ) #72 in Home Security Alarms | | Brand | Real Instruments | | Colour | Black | | Country of Origin | India | | Customer Reviews | 3.4 out of 5 stars 8 Reviews | | Manufacturer | Real Instruments | | Maximum Range | 20 metres | | Mfr Part Number | 20 Meter | ## Product Details - **Brand:** Real Instruments - **Colour:** Black - **Maximum Range:** 20 metres - **Manufacturer:** Real Instruments ## Images ![Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Image 1](https://m.media-amazon.com/images/I/41ndedtKxrL.jpg) ![Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Image 2](https://m.media-amazon.com/images/I/51vXmainLOL.jpg) ![Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Image 3](https://m.media-amazon.com/images/I/51CT4lzH0GL.jpg) ![Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Image 4](https://m.media-amazon.com/images/I/4149rIof1rL.jpg) ![Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Image 5](https://m.media-amazon.com/images/I/41+TSmmYwmL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Super *by N***H on 4 March 2024* Super ## Frequently Bought Together - Real Instruments Single Beam 20 Meter Light Radar Motion Sensor Door Window Burglar Alarm Gates Safety Infrared Radiation Set Barrier Photoelectric Infrared Detector for Automatic Doors 1 Pair - Real Instruments Single Beam Sensor/Photocell Sensor/Beam Detector Outdoor/Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/521511936-single-beam-20-meter-light-radar-motion-sensor-door-window](https://www.desertcart.co.uk/products/521511936-single-beam-20-meter-light-radar-motion-sensor-door-window) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-26*