--- product_id: 103689492 title: "Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System" brand: "ihc" price: "€ 25.74" currency: EUR in_stock: true reviews_count: 8 category: "Ihc" url: https://www.desertcart.pt/products/103689492-infrared-beam-sensor-1-pair-single-photoelectric-detector-active-ir store_origin: PT region: Portugal --- # Strong light resistance up to 50,000 LUX High-power IR transmitter with 90% sensitivity margin Fully sealed waterproof & dustproof Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System **Brand:** ihc **Price:** € 25.74 **Availability:** ✅ In Stock ## Summary > 🚨 Stay ahead of threats with smart, weatherproof IR detection! ## Quick Answers - **What is this?** Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System by ihc - **How much does it cost?** € 25.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/103689492-infrared-beam-sensor-1-pair-single-photoelectric-detector-active-ir) ## Best For - ihc enthusiasts ## Why This Product - Trusted ihc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Sensitivity:** High-power infrared transmitter-receiver pair delivers 90% sensitivity margin, ensuring precise detection even in challenging environments. - • **All-Weather Resilience:** Engineered with a fully sealed, waterproof, and dustproof design to perform flawlessly in rain, fog, or dust storms. - • **Smart Light Adaptation:** Built-in automatic strong light filter and AGC circuit dynamically adjust sensitivity to neutralize interference from car headlights or bright sunlight. - • **Versatile Security Upgrade:** Perfect for securing offices, homes, schools, and retail spaces—effortlessly replacing traditional passive infrared detectors with active, reliable protection. - • **Plug & Protect Installation:** Simple wall-mount setup with clear installation guidelines ensures your security system is up and running quickly, minimizing downtime. ## Overview This Infrared Beam Sensor pair features advanced waterproof and dustproof construction, high-power IR transmission with 90% sensitivity margin, and smart automatic light filtering to maintain reliable security detection in harsh weather and bright light conditions. Ideal for professional-grade security in commercial and residential settings, it supports easy wall-mount installation and includes built-in relay outputs for seamless integration. ## Description Attention: To this product, the transmitter power is high, there may be no reaction phenomenon when the distance is too close between the transmitter and receiver, at this time, make sure the distance should be at least 1 m between them and try again; when installation distance is very close and find insensitive phenomenon, can remove the condenser lens from transmitter and receiver, by this way can increase sensitivity. Color: black Infrared Frequency Operating Voltage:12-24V DC/AC wavg length：940nm Operating Temperature：-25℃ to+55℃ Relay output：N.C./N.O.Package Content : 1 Pair x Active Infrared Detector, 1 English Usage Manual, 1 Bag Install Tools Review: Great sensor and relay included. - These work pretty awesome. They have their own spdt relay inside which you need to jump 12v power to. I purchased a piece 12v buzzer to go with it. Super loud chirp! Seems like most commenters have never wired a spdt relay before or even know how they work. Review: This is a great product - This is a great product for the price of it works well for what I needed added one to that front door and one at the back door with the doorbell with two separate rings. ## Features - ADVANCED TECHNOLOGY: Design with waterproof cover,all-weather integrated structure design of fully sealed waterproof (fog), dust proof (insect),etc.Enables it to work normally in harsh environment. - UNIQUE DESIGH: 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. - ACTIVE REGULATION: Resistant to strong light up to 50,000 LUX, built-in automatic adjustment of 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) - WIDE APPLICABILITY: Active infrared detector can replace the passive infrared intrusion detector installed in small supermarkets, convenience stores, visitors import and export, window entrance protection, but also applicable to schools, office buildings, dormitories, home courtyards and other security systems. - INSTALLATION: The best installation height should be more than 2Ocm, 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 installatio. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FZ1XRXQ | | Battery Description | battery not included | | Best Sellers Rank | #160,237 in Electronics ( See Top 100 in Electronics ) #550 in Motion Detectors (Electronics) | | Brand | IHC | | Color | Black | | Customer Reviews | 4.0 out of 5 stars 72 Reviews | | Frequency | 1920 KHz | | Item Weight | 3.76 Ounces | | Manufacturer | angshi | | Maximum Range | 10 Meters | | Mfr Part Number | qwe123 | | Model Number | qwe123 | | Mounting Type | Wall Mount | | Power Source | Corded Electric | | UPC | 755101238943 | ## Product Details - **Brand:** IHC - **Color:** Black - **Item Weight:** 3.76 Ounces - **Maximum Range:** 10 Meters - **Power Source:** Corded Electric ## Images ![Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Image 1](https://m.media-amazon.com/images/I/61YcsupdIfL.jpg) ![Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Image 2](https://m.media-amazon.com/images/I/61XouVOt4DL.jpg) ![Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Image 3](https://m.media-amazon.com/images/I/71U-rG0+sbL.jpg) ![Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Image 4](https://m.media-amazon.com/images/I/713XQV8w48L.jpg) ![Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Image 5](https://m.media-amazon.com/images/I/715NTqFIjML.jpg) ## Questions & Answers **Q: How do a change this to normally closed on the relay? do not see how to do this** A: There is a small 3 pin connector on the RX unit, the unit with 4 wire connections. The 3 pin connector on the top portion of the board has a 2 position jumper cap on it. I believe the left 2 pins make it normally open and the right 2 pins make it normally closed, or vice a versa. **Q: Is there an app for this? There are no directions or instructions. How does it work?** A: There is no app for this, but there is a instruction in the product package. When used for anti-theft, it needs to be matched with the alarm host. This can not be used alone, but it can also be applied to other devices that require switching signals. **Q: How do i hear the alarm if this is outside and i am inside?** A: There is no alarm, you would have to wire the relay output to activate one if you wished. **Q: will this work on 9 volt ?** A: It states 12 to 24 volts AC/DC ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great sensor and relay included. *by C***S on November 9, 2020* These work pretty awesome. They have their own spdt relay inside which you need to jump 12v power to. I purchased a piece 12v buzzer to go with it. Super loud chirp! Seems like most commenters have never wired a spdt relay before or even know how they work. ### ⭐⭐⭐⭐⭐ This is a great product *by S***R on May 5, 2024* This is a great product for the price of it works well for what I needed added one to that front door and one at the back door with the doorbell with two separate rings. ### ⭐ Output voltage too low *by A***1 on September 8, 2020* I bought 2 of these, and both are having the same issue. The receivers only generate about 30mvdc to the output terminals when the relay is engaged, not enough to power the attached light/siren. There is 12vdc (2A) available at the power terminals (powers the light/siren with ease), but not enough power to the output terminals. The relays are working, just not getting enough juice thru. ## Frequently Bought Together - Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System - Digital Keypad (wired or wireless) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/103689492-infrared-beam-sensor-1-pair-single-photoelectric-detector-active-ir](https://www.desertcart.pt/products/103689492-infrared-beam-sensor-1-pair-single-photoelectric-detector-active-ir) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-09*