NavKar Systems
ACJ-405 WiFi GSM Touch Home Security Burglar Alarm System with Mobile App
ACJ-405 WiFi GSM Touch Home Security Burglar Alarm System with Mobile App
- Amazon.in price
- Rs. 8,499
- Here, direct
- Rs. 8,450
- You save
- Rs. 49
Amazon price checked 28 Oct 2026; Amazon prices change often. All our prices include GST, with the same warranty and free support.
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ACJ-405 WiFi GSM Security Alarm System
Make sure your home is protected with an alarm system from Navkar Systems. It supports Wi-Fi and 2G connectivity, so you can be doubly sure that it won't let you down. The product remembers up to 5 phone numbers, and when you pair it with an app, you'll gain remote control capabilities. The main panel will also work as an intercom. Large touch Keypad display makes it easy to use and completely new module increases safety.

You will know about the danger immediately
Now you can go on vacation or business trips with greater peace of mind. If any threat is detected, the system will immediately make an emergency phone call. The device can remember up to 5 numbers - if one is busy, it will simply dial another. This gives you the assurance that sooner or later someone will know about the danger.

Reliable protection
The system supports not only Wi-Fi but also GSM connection. So you do not have to worry that in case of power or Internet failure your home will remain unprotected. Regardless of the situation, you will immediately learn about possible dangers and respond accordingly. Fire, burglary or a family member fainting - no matter what happens, you will be able to call for help right away.
User-friendly
Operation of the alarm panel is fabulously easy - even children or the elderly will have no problem. The touch screen 2.4 inch TFT LCD display enables comfortable and intuitive control of the system. But that is not the end of its advantages! It also displays useful information such as date and time, as well as battery status.

Create a schedule to fit your lifestyle
You can arm or disarm the system at any time. There is also a feature to create schedules for its operation. If you want, schedule to run at night for a restful night's sleep and have it turn off automatically in the morning when you wake up. This will help you avoid the tedious daily adjustments.

Additional features
This system also has other features. It supports 2-way audio, so it will work perfectly as an intercom. For example, you can use it to communicate with your child when you are at work. The alarm panel supports SIM cards, enabling remote control of phone calls and SMS messages. It is also equipped with a large SOS button, which allows you to instantly activate the alarm in a critical situation.

Remote control with app
Pair the system with the Tuya app to control it remotely and gain access to a range of practical features. Arm or disarm your system from anywhere in the world, receive important notifications, change settings and check saved history. You no longer have to get up from your couch or armchair to operate the device - just reach for your phone!

Additional sensors - keep you and your family safe
This system is compatible with equipment such as a gas leak detector or motion sensor, among others. You can pair up to 100 devices with it to make your home even more secure. Want to be able to monitor your home in real time? Buy a compatible camera and pair it with your alarm panel! You can access the monitoring from the app.

Specification
| Brand | Navkar Systems |
|---|---|
| Model | NS-SOS |
| Power supply | mini USB 5V DC 1A |
| Battery | 500mA |
| Standby current | <150mA |
| Alarm current | <300mA |
| Frequency | 422 MHz |
| Coding | 1527 |
| Wi-Fi | IEEE802.11b/g/n |
| Battery capacity | 3.7V 500mAh |
| Working temperature | 0°C~ +55°C |
| Humidity | ≤80%RH |
| Dimensions | 18 x 11 x 2 cm |
| App | Tuya |
NavKar Systems ACJ-405
Specifications
A home burglar alarm panel that connects by Wi-Fi and GSM and is controlled with the Tuya app. It has a 2.4 inch colour touch display, stores 5 phone numbers for emergency calls, works as a 2 way intercom, and supports up to 100 wireless devices. Suited for homes and offices that want app control and a SIM based backup.
| Model | ACJ-405 |
|---|---|
| Model name on spec list | NS-SOS |
| Display | 2.4 inch TFT LCD touch screen |
| Connectivity | Wi-Fi (IEEE 802.11 b/g/n) and GSM (2G, SIM card) |
| App | Tuya |
| Phone numbers stored | 5 |
| Wireless devices supported | Up to 100 |
| Audio | 2 way audio, works as intercom |
| Other functions | SOS button, arm and disarm schedules, SMS and call control |
| Power supply | Mini USB 5 V DC 1 A |
| Battery | 3.7 V 500 mAh |
| Standby current | Less than 150 mA |
| Alarm current | Less than 300 mA |
| Frequency | 422 MHz |
| Coding | 1527 |
| Working temperature | 0 to +55 °C |
| Humidity | 80% RH or less |
| Dimensions | 18 x 11 x 2 cm |
Specifications from NavKar Systems' product details for this model. All prices include GST.
Frequently asked questions
What app does the ACJ-405 use?
It works with the Tuya app, where you can arm or disarm, get notifications, change settings and see saved history.
Does it need a SIM card?
For GSM calls and SMS, yes, it supports a SIM card. The listing says it supports 2G connectivity, so check that your SIM works on 2G.
How many phone numbers can it call?
It remembers up to 5 numbers and dials the next one if a number is busy.
How many sensors can I add?
Up to 100 wireless devices can be paired, such as motion sensors and gas leak detectors.
Does it have an SOS button and intercom?
Yes. It has a large SOS button and 2 way audio so the panel can be used as an intercom.
Can I set a schedule for arming?
Yes. You can create schedules to arm and disarm the system automatically, for example at night and in the morning.
How is it powered?
It runs on a mini USB 5 V DC 1 A supply with a built in 3.7 V 500 mAh battery.
Can I add a camera?
The listing says a compatible camera can be paired and viewed in the app. Ask NavKar which camera to use.
How does a wireless alarm system work?
Sensors on doors, windows and rooms send a radio signal to the alarm panel. The panel sounds a loud siren and, on Wi-Fi or GSM models, sends phone alerts.
Does it work without internet?
GSM models use a SIM card to call or send SMS even without Wi-Fi. Wi-Fi models need working internet for app alerts.
Is technical support available?
Yes. Free technical support is available for installation and setup.
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