--- product_id: 77483749 title: "pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects" brand: "pke" price: "7 zł" currency: PLN in_stock: false reviews_count: 3 url: https://www.desertcart.pl/products/77483749-pke-laser-alarm-circuit-ldr-based-laser-security-system-dot store_origin: PL region: Poland --- # 6-12V DC Power Buzzer Alarm Theft Protection pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects **Brand:** pke **Price:** 7 zł **Availability:** ❌ Out of Stock ## Summary > 🔍 Secure Your Space, Elevate Your Peace of Mind! ## Quick Answers - **What is this?** pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects by pke - **How much does it cost?** 7 zł with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/77483749-pke-laser-alarm-circuit-ldr-based-laser-security-system-dot) ## Best For - pke enthusiasts ## Why This Product - Trusted pke brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **🌙 Night Detection:** Automatically activates in darkness for 24/7 protection. - • **🔒 Enhanced Security:** Thwart potential intruders with a reliable alarm system. - • **🔧 Easy Installation:** Plug-and-play design for hassle-free setup. - • **📚 Perfect for Projects:** Ideal for school projects, combining learning with safety. - • **🇮🇳 Proudly Made in India:** Support local manufacturing with a trusted product. ## Overview The pke Laser Alarm Circuit is a versatile LDR-based security system designed for both home and school projects. Operating on 6-12V DC, this easy-to-use circuit features a buzzer alarm that activates in darkness, providing reliable theft protection. With a durable design and full customer support, it's the perfect blend of safety and education. ## Description pke Laser Alarm Circuit LDR Based Laser Security System || BEST SCHOOL PROJECTS by P.K.Enterprises : An LDR is a component that has a (variable) resistance that changes with the light intensity that falls upon it. This allows them to be used in light sensing circuits. Now Security is main concern for various buildings, houses and offices. For this purpose, there are a variety of security alarms available in market which uses various types of technology for intruder detection like infrared sensors, motion sensors, ultrasonic sensors, laser sensors, etc. this is laser alarm security sensor, ## Features - pke circuits, Operate 6 volt - 12 Volt DC, Battery not include with this kit, - Buzzer Alarm on in darkness, Easy to Use and durable circuit, 100% OK Tested Working, Made in India Project - You can use this circuit for theft alarm also, You can use this anti theft alarm circuit to thwart burglary. It sounds an alarm when someone come to enter into your home or office by front of LDR, Build in Dot Dot Type layout PCB for School Projects - Full Customer support provide, Auto sensing led light using ldr sensor ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | pke | | Item model number | pke_newldr | | Package Dimensions | 11 x 7.2 x 3 cm; 60 g | | ASIN | B07CNBLXHF | ## Images ![pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects - Image 1](https://m.media-amazon.com/images/I/81GsQhx2UQL.jpg) ![pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects - Image 2](https://m.media-amazon.com/images/I/81xMTgxJEDL.jpg) ![pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects - Image 3](https://m.media-amazon.com/images/I/91TfEn6tfKL.jpg) ![pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects - Image 4](https://m.media-amazon.com/images/I/81v9JIa3hfL.jpg) ![pke Laser Alarm Circuit LDR Based Laser Security System DOT PCB/Best for School Projects - Image 5](https://m.media-amazon.com/images/I/91Q4brs7wtL.jpg) ## Questions & Answers **Q: What is that red thing** A: This is LDR **Q: How it works** A: An LDR is a component that has a (variable) resistance that changes with the light intensity that falls upon it. This allows them to be used in light sensing circuits. (You can see Red device in Picture) **Q: Will the circuit diagram and the working of the circuit be attached?** A: yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Laser alaram *by K***S on Reviewed in India on 28 June 2020* It works nice and useful ### ⭐⭐⭐⭐ 4.0 out of 5 stars Not perfect *by D***H on Reviewed in India on 3 September 2018* Nice and as described but not working perfectly ### ⭐ 1.0 out of 5 stars USELESS PRODUCT *by A***R on Reviewed in India on 10 October 2018* Product is defective and quality is not nice.... --- ## 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.pl/products/77483749-pke-laser-alarm-circuit-ldr-based-laser-security-system-dot](https://www.desertcart.pl/products/77483749-pke-laser-alarm-circuit-ldr-based-laser-security-system-dot) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-20*