---
product_id: 85901949
title: "Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life"
brand: "sanjie"
price: "¥10211"
currency: JPY
in_stock: true
category: "San Jie"
url: https://www.desertcart.jp/products/85901949-sanjie-door-window-alarm-sensors-5-pack-125db-volume-control
store_origin: JP
region: Japan
---

# 125dB max volume - loud & clear 13-month battery life - long-lasting Magnetic contact sensor - instant alert Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life

**Brand:** sanjie
**Price:** ¥10211
**Availability:** ✅ In Stock

## Summary

> 🚪🔔 Secure your space, silence your worries!

## Quick Answers

- **What is this?** Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life by sanjie
- **How much does it cost?** ¥10211 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/85901949-sanjie-door-window-alarm-sensors-5-pack-125db-volume-control)

## Best For

- sanjie enthusiasts

## Why This Product

- Trusted sanjie brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power That Lasts:** Up to 13 months of continuous protection on a single set of batteries, with low battery alerts.
- • **Smart Volume Modes:** Choose between loud alarm or gentle chime to suit your lifestyle and avoid false alarms.
- • **Effortless Installation:** Peel-and-stick 3M tape means no tools, no hassle—secure your home in minutes.
- • **Unmatched Security Volume:** Adjustable 125dB alarm ensures you never miss a breach, customizable for your environment.
- • **Versatile Safety Coverage:** Perfect for doors, windows, cabinets, and more—protect every vulnerable entry point.

## Overview

The SanJie Door Window Alarm Sensors 5-pack delivers high-decibel alerts up to 125dB with adjustable volume modes, ensuring immediate notification of unauthorized entry. Featuring magnetic contact sensors, easy peel-and-stick installation, and a long-lasting 13-month battery life, these alarms provide versatile security for doors, windows, cabinets, and more—ideal for homes, offices, and rentals seeking reliable, user-friendly protection.

## Description

desertcart.com: Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life : Electronics

## Features

- Peace of Mind - Door window alarms guard you and your home's security. Alarms can also keep the safety of kids as well as the elderly who need care
- Wide Use - Magnetic sensor will alarm or chime if separated.Can be used in pool, home, apartment, store, office, garage, RV, warehouse, hotel and more. Alarm sensor can be installed on sliding door/window, cabinet, drawer, etc
- Easy to Install - Tear off the 3M double-sided tape on the back of the wireless alarm and install it on the door or window, etc. Turn on the switch, set the mode and ready to use. It is recommended that the alarm be installed indoors
- Volume Control - Alarms have 3 modes:125dB Alarm(loud enough), 100dB Alarm, 100dB Chime (dingdong 2 times). When the door window sensor is opened,it will alarm continuously for 31 seconds and will not stop until the window or door is closed
- Long Battery Life - Powered by 3 LR44 button batteries supplied. Normal life of the alarm is up to 13 months. When the alarm is in low battery, the indicator light will flash to alert you

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07GY9YXL2 |
| Audible Noise | 110 db |
| Battery Description | Alkaline |
| Best Sellers Rank | #40 in Home Security Systems |
| Brand | SanJie |
| Built-In Media | Magnets |
| Color | silver |
| Compatible Devices | Home Security System |
| Control Method | App, Touch |
| Customer Reviews | 4.4 out of 5 stars 1,736 Reviews |
| Item Type Name | Door Alarm |
| Manufacturer | SanJie |
| Manufacturer Warranty Description | lifelong |
| Maximum Range | 300 meters |
| Mfr Part Number | YYDOA01 |
| Model Number | YYDOA01 |
| Mounting Type | DOOR/WINDOW MOUNT |
| Number of Batteries | 1 12V batteries required. (included) |
| Number of Items | 5 |
| Power Source | Battery Powered |
| Sensor Technology | Contact Sensor |
| Shape | Oval |
| UPC | 680727535469 |
| Unit Count | 5 Count |
| Voltage | 110 volts |

## Product Details

- **Color:** White
- **Brand:** SanJie
- **Power Source:** Battery Powered
- **Compatible Devices:** Home Security System
- **Battery Description:** Alkaline

## Images

![Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life - Image 1](https://m.media-amazon.com/images/I/71nIcXemGKL.jpg)

## Available Options

This product comes in different **Color, Number Of Items** options.

## Questions & Answers

**Q: Are the alarms easy to install?**
A: YES. Just remove the 3M double-sided tape and ensure the gap between the alarm does not exceed 0.4in.The arrows of the alarm are aligned with each other.

**Q: How long do the batteries typically last?**
A: The batteries are already built into the alarm. 1 Alarm Pack for 3*LR44 batteries and will last 12 months normally.

**Q: Can the volume of the alarm be adjusted?**
A: YES. The alarm has 3 modes, Mode 1: 125dB alarm, Mode 2: 100dB alarm, Mode 3: 100dB “ding dong” 2 times. The alarm maximum sound loud enough to deter intruders.

**Q: Are the alarms suitable for use on sliding doors or windows?**
A: YES. Alarms are generally available for sliding doors/windows. For best performance, make sure the alarm is mounted in a position that detects movement.

**Q: Does alarm false alarm easily?**
A: NO. Alarm sounds immediately upon separation and lasts for 30s before stopping unless the door/window is closed.

---

## 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.jp/products/85901949-sanjie-door-window-alarm-sensors-5-pack-125db-volume-control](https://www.desertcart.jp/products/85901949-sanjie-door-window-alarm-sensors-5-pack-125db-volume-control)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-17*