Amazon.com: GE RPWFE Refrigerator Water Filter …

FOUR reasons: 1-Run a SIMPLE countdown timer (worth about 50 cents), 2-Turns on the “OVERDUE” light, REGARDLESS of the level of TRUE contamination of the filter. 3-Uses filter ‘Serial number’ identification to STOP the CUSTOMER from simply removing the RFID tag from the back of an old filter using the tag for a ‘Non-RFID’ tagged filter and …

https://www.amazon.com/GE-RPWFE-Refrigerator-Water-Filter/dp/B009PCI2JU