Warm Tips before use your GVDA GD900 Night Vision Device Infrared 1080P
To turn on the device, please press and hold the power button for 3 seconds. If the unit doesn't turn on after that, please check whether the polarity of the batteries is correct.
2. To turn on the night vision function, please simply press the IR+ button or increase the IR brightness level gradually, the image in the screen will turn black and white.
3. Keeping the IR on will also drain the battery. If battery power is insufficient, the IR brightness level will decrease automatically accordingly.
4. The night vision device doesn't work through windows because IR beams will reflect.
5. Rotate the lens to manually focus the target to be clearer.
6. You can use them during the daytime too without any problems.
7. It is not recommended to use poor quality batteries for the Night Vision (Otherwise there will be various problems). Better batteries are recommended.
