Owners of video surveillance systems often face the need to obtain high-quality images in complete darkness. Smart camera A8B It's a popular budget solution, but its basic settings can be confusing for beginners. Many users wonder how to activate the infrared illumination so the device can see in the dark.
In this article, we'll take a detailed look at the mechanics of night mode on this model. You'll learn how to force the IR LEDs to turn on if the automatic mode doesn't work, and what mobile app settings may be blocking this feature. Proper configuration infrared emitter β the key to effective security for your home.
It's worth noting that depending on the firmware version and the app used (Tuya Smart, Smart Life, or V380 Pro), the menu item names may differ slightly. However, the general operating principle of the hardware remains the same across the entire line of devices with this type of chipset. Detailed instructions are provided below.
How the IR illumination works in the A8B camera
Understanding how exactly it works infrared illumination, helps to avoid false alarms and exposure problems. In the model A8B A combination of a light sensor and an LED array emitting light in a spectrum invisible to the human eye is used. When the ambient light level drops below a certain threshold, the system is designed to automatically switch to black-and-white mode.
The switching process is controlled by a photosensor located near the lens. If this sensor is dirty or blocked, the camera may "think" it's dark during the day and turn on the backlight, resulting in overexposed frames. Conversely, it may not turn on in the dark if the software disables it or there's a logic error.
It's important to keep in mind that IR light tends to reflect off nearby objects. If the camera is installed too close to a wall or glass, infrared radiation will be reflected back into the lens, creating a "fog" or white spot effect. This is not a malfunction, but a feature of the physics of light that must be taken into account during editing.
There is also the concept of "smart" lighting, which turns on only when motion is detected. In the model A8B This feature is often software-based and depends on the capabilities of the specific application through which you control the device.
Automatic mode: settings in the app
The first thing to check is the settings in the mobile app you use to control the camera. Automatic switching is often enabled by default, but this may be disabled or blocked by other settings. Go to your device's settings and find the tab for image or basic functions.
Inside the menu, look for an item related to "Night shooting," "Day/Night," or "IR-CUT." This is where the switch that controls backlight operating modeIf the setting is "Auto," the camera automatically decides when to turn on the LEDs based on the light sensor readings.
Sometimes users accidentally set the camera to "Color" or "On" during the day, which interferes with the automatic operation. For proper operation with the motion sensor, it's best to leave the camera in "Auto" mode to prevent the camera from overheating and consuming excess power during the day.
Forced activation of IR LEDs
There are situations when the automatic system fails: for example, the camera is located in a very dark hallway, but the sensor "sees" the light from the router's indicator and doesn't turn on the backlight. In this case, forced activationThis is done through the same application settings where we selected the automatic mode.
Change the setting from "Auto" to "On" or "Manual." You should then hear a distinctive clickβthis is a mechanical switch. IR filter (IR-CUT) The lens changes position, allowing infrared light to pass through to the sensor. The image should turn black and white, and a faint red glow should appear around the lens.
If you use third-party video surveillance apps that support the ONVIF protocol, you can control the backlight through the camera's web interface. To do this, enter the device's IP address in your browser and log in.
βοΈ Checking manual activation
Setting sensitivity and schedule
Additional parameters, such as motion sensor sensitivity and scheduling, are often used to fine-tune camera operation at night. This helps conserve resources and avoid false alarms at night, when the IR illumination is already active.
In some versions of the software for A8B The "Smart IR" feature is available. It dynamically adjusts the LED power depending on the distance to the object. If the object is far away, the backlight is brighter; if it's close, it's dimmer to prevent overexposure. Make sure this feature is enabled if available in your interface.
It's also worth paying attention to recording schedule settings. There's no point in keeping the camera active with the backlight on 24/7 if no one is in the room at night. Set up activation timers so the camera switches to sleep or security mode only at the desired times.
Why does the camera click at night?
The distinctive clicking sound you hear every few minutes or when the lighting changes is the mechanical IR-CUT filter. It physically covers the sensor, cutting off excess light during the day, and is removed at night. If the clicking occurs too frequently in low-light conditions, try slightly adjusting the camera's angle or moving it so the light sensor doesn't "see" the flashing indicators.
Table problems and solutions
Below is a summary table to help you quickly diagnose night vision issues. If you encounter any of the situations described, find the corresponding row and follow the recommended steps.
| Symptom | Possible cause | Solution |
|---|---|---|
| During the day, the IR illumination turns on | Light sensor contamination | Wipe the area around the lens |
| The picture is black at night | IR illumination does not work | Check power and Day/Night settings |
| White spot in the center of the frame | Reflection from a wall/glass | Move the camera or cover up the glare |
| The image is jerky (color/b&w) | Borderline light level | Add external light or change the angle |
The influence of power supply on backlight operation
One of the most common reasons for unstable night mode operation is an insufficient power supply. During the day, the camera has enough current to operate the processor and Wi-Fi module, but at night, when the IR LEDs light up, power consumption increases sharply. If the power supply is old or of poor quality, the voltage may not be sufficient.
In this case, you may experience a cyclic reboot: the camera turns on, the backlight comes on, the voltage drops, the camera turns off, and the process repeats. It's also possible that the backlight flickers or glows dimly. For this model A8B It is recommended to use a power supply with a current of at least 1A, and preferably 2A.
Also check the length and quality of the power cable. A thin, long cable can cause voltage drops, especially if it's installed near power lines. Use only original or certified Micro-USB to DC cables.
β οΈ Warning: Using power supplies with voltages higher than 5V (e.g., 9V or 12V) without a special adapter can instantly damage the camera's circuit board. Ensure that the power supply's specifications match the specifications on the device's housing.
Frequently Asked Questions (FAQ)
Why does the camera shoot in color at night, but it is very dark?
This means the IR illumination hasn't turned on, and only the digital night mode (increased sensor sensitivity) is working. Check the "Day/Night" settings in the app and make sure it's set to "Auto" or "On." Also, check to see if the light sensor is covered.
Is it possible to turn off the red glow around the lens?
No, this is the physical glow of the IR LEDs, necessary for nighttime shooting. It can only be removed by disabling the illumination itself in the settings, but then the camera will no longer be able to see in the dark. There are cameras with "hidden" illumination, but the A8B's is exposed.
The camera clicks every 5 seconds during the day, what should I do?
This is a sign that the light sensor is in a borderline zone. It "sees" light and then shadow, constantly switching filters. Try cleaning the sensor or slightly adjusting the camera's angle so it's not directly illuminated by a lamp or the sun.
Does night shooting work through window glass?
Shooting through glass is not recommended. Infrared light reflects off the glass back into the lens, creating strong glare, making it impossible to see anything. Furthermore, glass can create glare during the day. It's best to mount the camera outside or inside, but not pointing it directly perpendicular to the glass.