--- product_id: 163502377 title: "Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch (Black),Magnetic Door Sensor, Normally Closed Magnetic Switch" brand: "gebildet" price: "Β£12.11" currency: GBP in_stock: true reviews_count: 7 category: "Gebildet" url: https://www.desertcart.co.uk/products/163502377-gebildet-5pcs-recessed-wired-security-window-gate-contact-sensor-alarm store_origin: GB region: United Kingdom --- # Compact 29x15.5x9mm size Precise 10-15mm sensing distance Ultra-long 1,000,000 cycles lifespan Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch (Black),Magnetic Door Sensor, Normally Closed Magnetic Switch **Brand:** gebildet **Price:** Β£12.11 **Availability:** βœ… In Stock ## Summary > πŸ”’ Elevate your home security game with precision and style! ## Quick Answers - **What is this?** Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch (Black),Magnetic Door Sensor, Normally Closed Magnetic Switch by gebildet - **How much does it cost?** Β£12.11 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/163502377-gebildet-5pcs-recessed-wired-security-window-gate-contact-sensor-alarm) ## Best For - gebildet enthusiasts ## Why This Product - Trusted gebildet brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Plug & Play Setup:** 33cm wired length with included screws and stickers for effortless installation. - β€’ **Durability That Lasts:** Engineered for 1 million+ activations, built to protect your space long-term. - β€’ **Discreet & Sleek Design:** Recessed black ABS casing blends invisibly with modern doors and windows. - β€’ **Reliable Magnetic Reed Switch:** Normally closed contact ensures zero false alarms and consistent performance. - β€’ **Seamless Security Integration:** Easily wire into your smart home system for instant alerts and peace of mind. ## Overview The Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm features compact ABS construction with a 10-15mm sensing range, supporting up to 1 million activations. Operating at 0.5A and 100V with a maximum power of 10W, these normally closed magnetic reed switches offer reliable, wired security detection for doors and windows, complete with installation accessories for quick setup. ## Description Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black ,Magnetic Door Sensor, Normally Closed Magnetic Switch Product Name: Door Magnetic Sensor Switch Product color: Black Product size: 29*15.5*9mm Main material: ABS Sensing distance: 10mm-15mm Wire length: 33cm Working current: 0.5A Working voltage: 100V (1-100V) Maximum power: 10W Service life: 1000000 times Product package Door Magnetic Sensor Switch*5 Screw*20 Sticker*10 Review: good item, does detect at 15mm, as described - Good item, works fine, I was a bit worried about the distance for detection, but when I tested these it was almost exactly 15mm distance for detection, which was plenty for me. Review: Works as expected - Connected these to an ESP32 and then stuck to my door. ESP32 is running ESPHOME which is then connected to Home Assistant. I get instant notifications when the door is open. These reed switches aren't overly sensitive so they do have to be quite close together to actually get the 'closed' signal. They were extremely easy to setup and good value for money. ## Features - Product Name: Door Magnetic Sensor Switch - Product size: 29*15.5*9mm Wire length: 33cm - Sensing distance: 10mm-15mm - Sensing distance: 10mm-15mm Service life: 1000000 times - Working current: 0.5A/Working voltage: 100V (1-100V)/Maximum power: 10W ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Z4NCWDD | | Best Sellers Rank | 84,225 in DIY & Tools ( See Top 100 in DIY & Tools ) 74 in Home Security Door & Window Sensors | | Brand | Gebildet | | Circuit Type | 1-way | | Colour | Black Nc | | Connector Type | Wire connector | | Connector type | Wire connector | | Contact Material | Metal | | Contact Type | Normally Closed | | Contact type | Normally Closed | | Control Method | Touch | | Country Of Origin | China | | Current Rating | 0.5 Amps | | Current rating | 0.5 Amps | | Customer Reviews | 4.4 out of 5 stars 545 Reviews | | Manufacturer | Gebildet | | Material | Plastic | | Model Number | AK3-AT1-GL-M-X | | Mounting Type | Door Mount | | Number of Positions | 5 | | Operating Voltage | 100 Volts (DC) | | Operating voltage | 100 Volts (DC) | | Operation Mode | Automatic | | Operation mode | Automatic | | Switch Type | reed | | Terminal | Screw | | UPC | 729257785910 | | Unit Count | 5.0 Count | | Wattage | 10 watts | ## Product Details - **Brand:** Gebildet - **Circuit type:** 1-way - **Connector type:** Wire connector - **Contact type:** Normally Closed - **Current rating:** 0.5 Amps - **Material:** Plastic - **Operating voltage:** 100 Volts (DC) - **Operation mode:** Automatic - **Switch type:** reed - **Terminal:** Screw ## Images ![Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch (Black),Magnetic Door Sensor, Normally Closed Magnetic Switch - Image 1](https://m.media-amazon.com/images/I/71csUmCakjL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ good item, does detect at 15mm, as described *by M***R on 8 October 2025* Good item, works fine, I was a bit worried about the distance for detection, but when I tested these it was almost exactly 15mm distance for detection, which was plenty for me. ### ⭐⭐⭐⭐⭐ Works as expected *by T***R on 29 December 2024* Connected these to an ESP32 and then stuck to my door. ESP32 is running ESPHOME which is then connected to Home Assistant. I get instant notifications when the door is open. These reed switches aren't overly sensitive so they do have to be quite close together to actually get the 'closed' signal. They were extremely easy to setup and good value for money. ### ⭐⭐⭐⭐ A little bit of an eye sore but work great *by J***D on 27 June 2024* Used these with a Shelly DCi4 to turn my loft lights on when I open the hatch and it works great. Not the nicest looking so I use them on the inside of the hatch so it can’t be seen. ## Frequently Bought Together - Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch(Black),Magnetic Door Sensor,Magnet Near - Connect Circuit, Magnet Away - Break Circuit - Arduino Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping - Gikfun Screw Shield Expansion Board For Arduino UNO R3 EK7007 --- ## 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/163502377-gebildet-5pcs-recessed-wired-security-window-gate-contact-sensor-alarm](https://www.desertcart.co.uk/products/163502377-gebildet-5pcs-recessed-wired-security-window-gate-contact-sensor-alarm) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-03*