# O3 Alarm > Wireless DIY security system for homes and small commercial applications. (iPhone/iPad app by Chuango Security Technology Corporation.) - Source: https://appshunter.io/ios/app/o3-alarm/id950579931 (this page in markdown: same URL + `.md`) - Developer: [Chuango Security Technology Corporation](https://appshunter.io/developer/534068551) - Category: Utilities, Lifestyle - Price: Free - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 71 MB - Languages: American English, Bulgarian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hungarian and 12 more - Released: 2014-12-28 - Data updated: 2026-06-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/o3-alarm/id950579931/reviews.md ## What is O3 Alarm? Another signature system design from award-winning Chuango Security Technology Corporation, the O3 comes with world-class aesthetics and German-style precision craftsmanship. Chuango O3 is your 21st century security guard in disguise, made for wireless DIY comfort and convenience, and is particularly suitable for residential and small commercial applications. All you need is a Chuango O3 set and a regular SIM card. What your wire-free Chuango O3 can do for your home or small shop/SOHO: [360° Protection] Ideal for DIY home/shop improvement projects, the O3 can accommodate up to 50 wireless sensors and accessories, which can be easily “mounted” on walls or door/window frames with double-sided stickers. You will be the first to know – via this App – upon detection of intrusion, flood, smoke or gas. [360° Convenience] You can set exit and entry delays as you wish, so you and your family can go out and come back home at your own pace, without having to fumble around in your pocket for your mobile phone or remote control, to arm or disarm your Chuango O3. Pre-set routines can be entered so that your O3 will automatically guard your small shop or welcome you home right on the dot. Specific delays for specific zones are also possible. [360° Deterrence] Siren duration and volume can be adjusted per your need, with the maximum volume at 95 decibels. [360° Interaction] You can manage and interact with your O3 on your smartphone App, via your remote control, or directly on the panel. It can also double as a house phone to make or receive calls. [360° Sweet Home] The RFID tags can be renamed at will, and when used to disarm your O3 system, you immediately get an SMS text notification of who just came home. Multiple users and smartphones can be enabled to control and interact with one single O3 system once paired. You can take turns watching over your property and loved ones back home. Download your free Chuango O3 App and activate your smart and secure home now! ## Key features - 360° protection with up to 50 wireless sensors - Intrusion, flood, smoke, and gas detection alerts - Customizable entry and exit delays - Adjustable siren duration and volume (up to 95 dB) - Smartphone, remote control, and panel interaction - RFID tag management and SMS notifications - Supports multiple users and smartphones ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/o3-alarm/id950579931/reviews.md ### 3/5 — New features *2019-08-16* Would like Touch ID and Face ID be added ## Frequently asked questions about O3 Alarm ### What is O3 Alarm? O3 Alarm is a wireless DIY security system designed for residential and small commercial use. It allows you to monitor and control your home or shop's security through a smartphone app. ### How many sensors can O3 Alarm support? The O3 Alarm system can accommodate up to 50 wireless sensors and accessories, providing comprehensive coverage for your property. ### Can O3 Alarm notify me of different types of emergencies? Yes, O3 Alarm can alert you via the app upon detection of intrusion, flood, smoke, or gas, ensuring you are immediately informed of potential dangers. ### Does O3 Alarm have ads? No, O3 Alarm is ad-free, providing an uninterrupted user experience for managing your security system. ### What devices is O3 Alarm compatible with? O3 Alarm is available for iPhone and iPod devices, offering control and monitoring capabilities on the go. ### How often is O3 Alarm updated? The latest version of O3 Alarm is 2.3.0, which was last updated on January 22, 2019. Updates ensure the system remains reliable and secure. ### Can multiple people control the O3 Alarm system? Yes, multiple users and smartphones can be enabled to control and interact with a single O3 Alarm system, allowing shared responsibility for property monitoring. ### What is the siren volume of O3 Alarm? The siren duration and volume of O3 Alarm can be adjusted to your needs, with a maximum volume of 95 decibels for effective deterrence. ## Version history (last 5 releases) ### 2.3.0 — 2019-01-22 We’ve updated the app to bring you the best experience. This release has bug fixes and stability improvements. ### 2.2.6 — 2018-07-18 We’ve updated the app to bring you the best experience. This release has bug fixes and stability improvements. ### 2.1.8 — 2017-12-11 Add new camera IP116 Plus ### 2.1.3 — 2017-01-05 We really pay attention to your experience of using our product. In this updated version we optimized our APP’s structure and enhanced our system’s stability. ### 2.1.0 — 2016-06-22 We really pay attention to your experience of using our product. In this updated version we optimized our APP’s structure and enhanced our system’s stability. ## Apps similar to O3 Alarm | App | Rating | Price | Category | | --- | --- | --- | --- | | [PC/SC BLE](https://appshunter.io/ios/app/pcsc-ble/id1453700291) | 5.0 (1) | Free | Utilities | | [karinaa home security](https://appshunter.io/ios/app/karinaa-home-security/id6463707620) | — | Free | Utilities | | [ERA Invincible Alarm App](https://appshunter.io/ios/app/era-invincible-alarm-app/id1160039868) | — | Free | Utilities | | [Alarmhandler security system](https://appshunter.io/ios/app/alarmhandler-security-system/id964809112) | 4.0 (2) | Free | Utilities | | [Seed Alarm](https://appshunter.io/ios/app/seed-alarm/id1485621381) | 3.7 (9) | Free | Utilities | | [AllGuard](https://appshunter.io/ios/app/allguard/id980353756) | — | Free | Utilities | ## More apps by Chuango Security Technology Corporation - [G3 Alarm](https://appshunter.io/ios/app/g3-alarm/id536065380) - [G5 Alarm](https://appshunter.io/ios/app/g5-alarm/id547534576) - [B11 Alarm](https://appshunter.io/ios/app/b11-alarm/id830083035) - [GO2 Alarm](https://appshunter.io/ios/app/go2-alarm/id950220556) - [E5 WiFi plug](https://appshunter.io/ios/app/e5-wifi-plug/id951243570) All apps by Chuango Security Technology Corporation: https://appshunter.io/developer/534068551 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-06.*