If you choose to open the Flume Water Sensor you will see the circuit board, a battery pack, and gel packets. We designed the interior of the Flume Water sensor to protect the inside of the device as much as possible. In most cases, the Flume Sensor sits outside in an underground meter pit. The Flume Sensor can be installed in very extreme environments including; freezing temperatures, heavy rainfall, and intense heat or humidity. Flume is weather-proof and can withstand these environments due to the design of the device.

Below are commonly asked questions and explanations about the appearance of the inside of the Flume Water Sensor.

What is the white spot on the circuit board?

Flume has a gel coating on the circuit board to help weather-proof the inside of the device. During manufacturing, an ID is attached to the unit in the location of the white spot, then removed after the gel coating is placed. The removal of the ID causes the spot to look white. There are no active components in this area, and the white spot is completely normal.

What are the gel packs for?

You may find one, two large bundles, or two large gel packs inside the sensor (pictures below). The gel pack(s) absorb excess humidity that can build up in certain conditions. They act as a second layer of protection against extreme weather (like heavy rainfall), in addition to the seal, and the protective coating against excess moisture.

Why is there only 1 battery pack?

Your Flume comes with 1 pre-installed battery pack that can be installed in either slot. The single battery pack provides sufficient battery life for the general consumer. Flume is capable of holding up to 2 battery packs for extended life. If you wish to purchase an additional battery pack, you can do so by clicking HERE. To learn more about our custom battery pack click HERE.

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