LOUD is not the right word. I found that I had to be within 10 feet in complete silence (no background noise) to know where the keyfobs were. 1 fob is even weaker and I have to be within 5 feet to hear it. I had new Sony CR2032 batteries so I tried them with Sony batteries with no improvement. When the key fob is placed face up in total darkness, the key fob's flashing light can be seen from about 3 meters away. If the key fob is facing down, you cannot see the light.
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