--- 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: "VT8422" currency: VUV in_stock: true url: https://www.desertcart.vu/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable store_origin: VU region: Vanuatu --- # 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:** VT8422 **Availability:** ✅ In 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?** VT8422 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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 ## Features - 🚪【High-sensitivity alarm】This Portable door jammer is an industrial-strength door security device, that prevents unwanted entering forcibly, High-sensitivity induction, will alarm as soon as it vibrates, guarding your sweet sleep. Also suitable for public buildings, schools, and offices for all you. - 🚪【Upgraded Door Jammer】The upgraded door stopper is made of thick aluminum alloy material, anti-crack, and durable in use. The bottom is made of high-quality rubber material, has a strong grip on the floor,wear-resistant. The great design uses the displacement of force to block the door against attempting forced entry. Make you feel at ease and safer. - 🚪【Easy to Install】No tools. It just takes a moment to fit in the gap under an inswinging door. Place the door lock stopper below the door handle directly, then adjust the foot to make it tightly grasp the ground. In an emergency, the quick-release removes the lockdown with an upward motion. Note: Testing the door ensure the door stopper is firmly fixed in position. - 🚪【Compact & Exquisite】The door jammer is very compact and exquisite, it can be put in a bag or pocket, and we provide an extra storage bag to put it in, so you can carry it with you when you are on business or traveling. - 🚪【Compatibility All】This door security devices stopper is better suited for door gaps of 0.2-1.38 inch ( 5-35mm ), and door thicknesses of 1.18-1.97 inch(30-50mm). Compatible with all types of floors. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | SYOSI | | Model Number | SI-4738 | | Color | B | | Product Dimensions | 14 x 14 x 5 cm; 360 g | | Material | Aluminum, Rubber | | Item Weight | 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) ## Available Options This product comes in different **Color** options. ## 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.vu/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable](https://www.desertcart.vu/products/523474307-portable-door-security-lock-door-jammer-80-decibel-alarm-portable) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-11*