inspected. In the meantime, it has 2 levels of strong light inhibition, which can ensure a clear view while inspecting the reflective objects(such as metal surface)；and it also possesses 2 levels of weak light compensation, which can help to ensure enough light source so that it can reach further observation distance and clearer image.
Besides, this product has options of 2.8mm and 3.9mm forward view camera module. One base unit, different insertion tubes, you can gain the best match with the best price to satisfy multiple applications.