The Pentair COM Port Expansion Module (520818) increases the number of communication ports available for Pentair automation systems. It allows additional devices such as pumps, heaters, and controllers to connect to the automation network.

Pentair COM Port Expansion Module (520818) Compatibility

• Compatible with Pentair automation systems including IntelliTouch and IntelliCenter

Key Features

• Supplied under part number 520818 for exact-match ordering.
• Ships from our US warehouse with tracking on dispatch.

Specifications

• Brand: Pentair
• Manufacturer part number: 520818
• Category: Pool & Spa Parts
• Condition: New
• Shipping weight: 2 lb

Frequently Asked Questions

What part number is this pool & spa part?

This item is supplied under part number 520818. Match that number against your equipment's parts diagram before ordering.

How do I confirm this part fits my equipment?

Check the part number stamped on the component you are replacing, or find it on the parts schematic in your owner's manual. If the number differs or is unreadable, send us your equipment model and serial number and we will verify fitment before you order.

How quickly does this ship?

In-stock items ship from our US warehouse on business days. You will receive tracking by email once the order leaves the warehouse.

Can I return it if I ordered the wrong part?

Unopened, uninstalled items can be returned within 30 days. Equipment that has been installed or plumbed cannot be returned, so confirm fitment before installation.

Is this covered by a warranty?

Manufacturer warranty terms vary by brand and product. Warranty claims generally require proof of purchase and, on installed equipment, evidence of professional installation.