A filter shows its own status by changing color. EyeOnFilter is the eye that watches it — here's exactly how.
As a filter traps impurities, its media darkens — a new water cartridge is pale, a spent one is deep amber or brown. That color change is a reliable signal of how much life is left.
EyeOnFilter shines white LEDs onto the filter through the housing's transparent window, then measures the reflected light as red, green, and blue values. The onboard CPU maps that color to a status and reports it.
Download the EyeOnFilter app, then place the sensor against the clear window of your filter housing. No tools, no plumbing changes.
During setup you enter your home Wi-Fi credentials through the app; the sensor registers itself and joins your network. No hub or bridge.
The sensor mostly sleeps. About once a day it wakes, the LEDs illuminate the filter, the color sensor takes a reading, and it reports dirty / not-dirty over Wi-Fi.
When the color crosses the dirty threshold, the app notifies you anywhere in the world. Order a replacement cartridge in a tap.
Measures red, green, and blue light reflected from the filter at high resolution to map exact color.
A regulator and battery monitor feed the CPU, radio, sensor, and LEDs. Daily-wake duty cycle means 2+ years.
An integrated radio and antenna talk straight to your network and phone — alerts reach you anywhere.