TempoTreadle II for Ashford Jack Loom
The System Unit + Array kit includes everything you need, except for your Weaving Designs (WIF files) to install and use TempoTreadle.
The Array Kit Only includes the Sensor Array, Treadle Magnets, Velcro, and the Caddy that fits on the Ashford Jack along with the select Power Option. This option assume you already have a System Unit that is used on other loom(s).
When selecting the Extended Battery option, you will also receive the AC adapter and longer cable.