--- product_id: 147227440 title: "– Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver" brand: "trarover" price: "€ 58.03" currency: EUR in_stock: true reviews_count: 8 category: "Trarover" url: https://www.desertcart.hr/products/147227440-koostone-wireless-magnetic-door-entry-sensor-alarm-chime-door-open store_origin: HR region: Croatia --- # 400ft wireless range Battery powered, 2-year warranty 55 customizable ringtones – Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver **Brand:** trarover **Price:** € 58.03 **Availability:** ✅ In Stock ## Summary > 🔔 Never miss a moment—secure your space with style and sound! ## Quick Answers - **What is this?** – Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver by trarover - **How much does it cost?** € 58.03 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/147227440-koostone-wireless-magnetic-door-entry-sensor-alarm-chime-door-open) ## Best For - trarover enthusiasts ## Why This Product - Trusted trarover brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stay Alert from Anywhere:** 400ft wireless range lets you monitor multiple entry points without missing a beat. - • **Customize Your Soundscape:** Choose from 55 unique ringtones with 5 volume levels up to 120dB to fit your environment perfectly. - • **Effortless Setup & Expansion:** Magnetic sensors install in seconds with less than 0.3-inch gap; add more sensors or receivers as needed. - • **Seamless Multi-Door Monitoring:** Two sensors with independent chimes let you know exactly which door or window is opened. - • **Reliable Security with Peace of Mind:** Battery-powered with included batteries and backed by a 2-year warranty and responsive after-sales support. ## Overview The Koostone Wireless Magnetic Door Entry Sensor Alarm Chime is a versatile security solution featuring two contact sensors and one plug-in receiver. It offers a 400ft wireless range, 55 customizable ringtones with adjustable volume up to 120dB, and easy magnetic installation requiring less than 0.3 inches gap. Designed for shops, garages, windows, and home safety, it supports expandable multi-sensor setups and comes with a 2-year warranty for dependable anti-theft and safety alerts. ## Description Never miss a customer when door opens for business entryKoostone door sensor always monitors door opening, you will be reminded if someone open the door. The door chime would be the most conscientious and committed worker in your shop.5 Levels Volume Control and 400ft Wireless Range5 levels volume on each ringtone, which allows you lower voice to silence or turn the volume up to 120dB.You can place the Receiver almost anywhere in your home/shop because it has a 400ft wireless range.Product SpecificationParameters of Receiver: Voltage of plug- in receiver: 110V-240VExpandable to multiple smart receiver or sensor: <50pcs Volume Range: 0~120dB Working Temperature：-15 ℃ ~ +60 ℃Wireless Range: 400 feetParameters of Door Sensor: Wireless transmitting distance: ≤ 120 m (in open area)Working temperature: -15 ℃ ~ 60 ℃Package: 2* Door sensor(battery included)1* Receiver1 * User Manual Review: Was working great, then stopped working after 6 months - Was working great, then stopped working after 6 months Review: Installed 7 months, no issues, great product. - I use these on two internal doors, rather than front/back door. Work as described and only had to change one of the batteries once recently after 6 months in use. Batteries are cheap enough to buy. You could even fit these to cupboards etc if you really wanted too. But remember you would have to turn the main unit off if you wanted to disabled the chime. Would recommend. ## Features - 【How it works】 - Koostone Wireless Door Chime comes with 2 door/window sensors and 1 receiver, and each sensor can set a separate sound with the receiver, that means you can know the front door or the back door or the mailbox opens without needing to go to see it. The sensors will detect the door/window, and will be triggered to send out a signal when the door/window opening. Receiver will receive the signal and alerts. It can be used as door chimes when door opens for business. - 【55 Ringtones, 5 Levels Volume Control, 400ft Wireless Range】 - 55 Unique ringtones/chimes with 5 Level Volume for a 0-120dB volume range, you can mute the door alarm or choose a favorite level volume. The receiver cover a distance of 400ft Wireless Range, wireless signal can also go through walls. - 【Fixing Distance Less Than 0.3 inches & Expandable】 - NOTE: The fixing distance of sensor and magnet should be LESS than 0.3 inches/0.8 cm, the closer the better, try to reset them closer if the receiver doesn't work, this is very important. Each door sensor or receiver can be expandable, add more receiver or sensor to setup different chimes in multiple areas for front door, back door, sliding door etc. - 【Easy Installation】 - Step 1: Choose a favorite ringtone and pairs the sensor and receiver. Step 2: Adhere the magnetic sensor well on your door/window and plug the reveiver into a socket. All ready… PS: the same way to set second sensor ringtone, and you can choose a different chime. - 【QUALITY GUARANTEE】 - Koostone wireless door chimes provides a 2-YEAR WARRANTY and AFTER-SALES SERVICE within 24 hours. Complete satisfaction guaranteed! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TQLQ38D | | Battery Description | battery_type_12v | | Best Sellers Rank | 81,326 in DIY & Tools ( See Top 100 in DIY & Tools ) 63 in Home Security Door & Window Sensors | | Brand | Trarover | | Colour | White | | Compatible Devices | Enterprise Systems | | Control Method | Touch | | Country of Origin | China | | Customer Reviews | 4.0 4.0 out of 5 stars (621) | | EU Spare Part Availability Duration | 2 Years | | Manufacturer | Trarover | | Manufacturer Warranty Description | 2. | | Maximum Range | 400 Feet | | Model Number | N6 | | Mounting Type | On door, window support | | Number of Batteries | 2 CR2 batteries required. | | Part Number | N6 | | Power source | Battery Powered | | Sensor Technology | Contact Sensor | | Size | Large | | Smart Home Compatibility | Not Smart Home Compatible | | Sound Level | 120 Decibels | | UPC | 824381926878 | | Unit Count | 3.0 count | | Voltage | 12 Volts | ## Product Details - **Battery description:** battery_type_12v - **Brand:** Trarover - **Colour:** White - **Compatible devices:** Enterprise Systems - **Power source:** Battery Powered ## Images ![– Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver - Image 1](https://m.media-amazon.com/images/I/5135M3mAsiL.jpg) ## Questions & Answers **Q: Can it be programmed to give a different sound on door open and also on door closing ? Answer to Sep 1st question implies that it does.** A: Thank you very much for your attention to trarover sensor alarm chime, the answer is NO. The receiver will ring when the sensors are separated, that means it won't ring when the door is closed, hope that helps. **Q: Hi I need a chime alert that will constantly ring until the door is shut. Will this do it?** A: Thank you very much for your attention to this chime alert, no, this chime won't constantly ring when the door keeps open, in principle, the receiver will ring once when the two secure contact sensors separate, that means it will ring one time ( it will last a few seconds, depends on the ring you chose) when you open the door, it will ring again when the door swings in the opposite direction which you open, hope that helps. **Q: Does this have vibrate mode to alert deaf people** A: Thank you very much for your attention to this Koostone Alarm Chime, no, it is the plug in type alarm chime, not battery type, so it does not have vibrate mode, but it has flash light function to alert deaf people, hope that helps. **Q: Is it possible to get 2 receiver** A: Thank you very much for your attention to Trarover sensor alarm chime, the receiver is not sold separately currently, sorry for that, you have to buy two packages if you need two receivers, hope that helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Was working great, then stopped working after 6 months *by P***. on 29 June 2022* Was working great, then stopped working after 6 months ### ⭐⭐⭐⭐⭐ Installed 7 months, no issues, great product. *by G***P on 4 May 2020* I use these on two internal doors, rather than front/back door. Work as described and only had to change one of the batteries once recently after 6 months in use. Batteries are cheap enough to buy. You could even fit these to cupboards etc if you really wanted too. But remember you would have to turn the main unit off if you wanted to disabled the chime. Would recommend. ### ⭐⭐⭐⭐ Door entry *by A***. on 14 November 2025* These do what it says on the label different sounds for mulity of doors ## Frequently Bought Together - Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver - Viking Signs MH205-L15-V"Hand Wash Only" Sign, Vinyl, 50 mm H x 150 mm W,Blue - HSE Health And Safety Law Poster A3 FWC30/A3: what you need to know (Statutory Instruments 2024) --- ## 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.hr/products/147227440-koostone-wireless-magnetic-door-entry-sensor-alarm-chime-door-open](https://www.desertcart.hr/products/147227440-koostone-wireless-magnetic-door-entry-sensor-alarm-chime-door-open) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-16*