You can use this Remote Extension Speaker to add more speakers to your units or to simply add an extension speaker to a unit that has internal speakers.

For the BirdXpeller Pro 1 & 2, and the Woodpecker Pro units, you can add one Remote Extension Speaker.

For the Super BirdXpeller Pro1 & 2 and the Critter Blaster Pro, you can add an additional two Remote Extension Speakers.

For the Quadblaster QB4 you can use 4 Remote Extension Speakers to replace the 4 internal speakers that it has already.

NOTE: You cannot add additional speakers to the Broadband Pro or the Ultrason X.