Pentair Wireless Remote Antenna Only | EasyTouch Control System | 520217Z Lighting inspect the union O-ring at

inspect the union O-ring at the same time — a compromised O-ring will cause the joint to leak even with a new nut in place

helping to extend service life and maintain filter efficiency between cleanings

Replacing all four cartridges at the same time ensures consistent flow

the heater may lose heating efficiency

Pentair Wireless Remote Antenna Only | EasyTouch Control System | 520217Z Lighting inspect the union O-ring atThe Pentair Wireless Remote Antenna (520217Z) is the OEM replacement antenna for the EasyTouch Pool and Spa Automatic Control System, for use after the system's antenna change date. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Electrical control components must be installed or replaced by a qualified electrician or certified pool technician. This antenna maintains the wireless signal path between a Pentair handheld remote and the EasyTouch