--- product_id: 523474307 title: "Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device" brand: "syosi" price: "€ 7.96" currency: EUR in_stock: false reviews_count: 1 url: https://www.desertcart.hr/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable store_origin: HR region: Croatia --- # 3-month battery life 80dB alarm power tool-free quick install Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device **Brand:** syosi **Price:** € 7.96 **Availability:** ❌ Out of Stock ## Summary > 🚪 Lock it. Alarm it. Own your peace of mind. ## Quick Answers - **What is this?** Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device by syosi - **How much does it cost?** € 7.96 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable) ## Best For - syosi enthusiasts ## Why This Product - Trusted syosi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Fit:** Compatible with door gaps 5-35mm and thickness 30-50mm, fits almost any inswing door. - • **Effortless Setup:** No tools needed—secure your door in seconds and release instantly in emergencies. - • **Instant 80dB Alarm:** High-sensitivity vibration sensor triggers loud alert to deter intruders immediately. - • **Robust Aluminum Build:** Durable, anti-crack zinc alloy frame with rubber base ensures maximum grip and longevity. - • **Ultra-Portable Design:** Compact and lightweight with included storage pouch, perfect for travel and daily use. ## Overview The SYOSI Portable Door Security Lock is a sleek, industrial-strength door jammer featuring an 80-decibel alarm triggered by vibration. Crafted from durable aluminum alloy with a rubber base for strong floor grip, it installs tool-free under inswing doors (5-35mm gap, 30-50mm thickness). Powered by two CR2032 batteries with a 3-month standby, it’s compact and travel-ready with an extra storage pouch—ideal for apartments, hotels, offices, and on-the-go personal security. ## Description Potable door jammer: 1. Provide absolute security and privacy, increase the security of your room 2. Will not mark or damage the door, especially will not violate your lease. 3. You can go through security checks such as high-speed trains, subways, and planes. 4. Built-in two-button batteries, can stand by continuously for 3 months Product parameters: Color: red Material: Zinc Alloy Features: Portable, DurableCompatible door thickness: 5-35mmWeight: 233g Alarm parameters: ●Battery two CR2032 ●80 decibels ●The indicator light flashes every 6 seconds ●Battery standby for 3 months ●Start working after flashing light ●60 times of regular use ●Beep for 5 seconds each time ●Send two additional batteries Installation method: 1. Align under the door handle and insert 2. Tighten the bolts clockwise 3. Turn on the alarm switch 4. Try opening the door from the inside Review: اختيار موفق - رائع وممتاز ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BVRRLJGJ | | Best Sellers Rank | #55,759 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #460 in Door Stops | | Brand | SYOSI | | Color | B | | Customer Reviews | 3.4 3.4 out of 5 stars (5) | | Date First Available | 14 February 2023 | | Item Weight | 360 g | | Material | Aluminum, Rubber | | Model Number | SI-4738 | | Product Dimensions | 14 x 11 x 5 cm; 360 g | ## Images ![Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Image 1](https://m.media-amazon.com/images/I/51mYZFTISvL.jpg) ![Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Image 2](https://m.media-amazon.com/images/I/61dSnBzBLCL.jpg) ![Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Image 3](https://m.media-amazon.com/images/I/71ZAo5DifGL.jpg) ![Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Image 4](https://m.media-amazon.com/images/I/61wI-YoBnDL.jpg) ![Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Image 5](https://m.media-amazon.com/images/I/71qfRinLlAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ اختيار موفق *by F***N on 7 June 2026* رائع وممتاز ## Frequently Bought Together - Portable Door Security Lock, Door Jammer, 80 Decibel Alarm Portable Door Lock Stopper with 2 Extra Batteries for Travel/Apartment/Safety Self Defense/Home Hotel, Personal Protection Security Device - Trustella Original Heavy-Duty Portable Door Lock - Premium Stainless Steel for Enhanced Safety - Ideal for Travel, Home, Hotels, Apartments - Adjustable, Easy Install with Silicone Protector Caps --- ## 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/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable](https://www.desertcart.hr/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-20*