At release, Echo family products had a warranty of 2 years.
As of January 1st, 2018 to present, all Echo products have a warranty of 5 years.
This covers all Echo products, including Echo-ACP(E-ACP) processors, Echo Relay Panels (ERP), and Echo Relay Feedthrough Panels (ERP-FT).
Sensor IQ does NOT have a 5 year warranty. Whereas the Sensor IQ has Echo Capabilities, it is a Sensor branded product, and therefore carries a 2 year warranty.