RAMSES_ESP | Indalo-Tech
Indalo-Tech is a UK store and the home of the RAMSES_ESP, a USB gateway that connects RAMSES-II heating systems such as evohome to Home Assistant or Domoticz. It comes with a straight antenna, a right-angle antenna or both, and each option is built from parts on the same shelf. Stock Sorted counts the parts, so every option in Shopify shows how many can actually be built.
The RAMSES_ESP is a gateway stick with a choice of antenna. The customer picks a straight antenna, a right-angle antenna or both. In Shopify that is three variants of one product.
Each variant is built from parts on the shelf. Every option uses one gateway. The straight option also uses a straight antenna, the right-angle option uses a right-angle antenna, and the option with both uses one of each.
Shopify counts each variant on its own. A sale of the straight option leaves the right-angle option at the same count, although both options used a gateway from the same shelf. When the last gateway is gone, every option has to show sold out. When the straight antennas run out, the straight option and the option with both have to stop, and the right-angle option keeps selling.
Stock Sorted keeps one count per part: gateways, straight antennas and right-angle antennas. Each variant draws from every part it uses.
With 3 gateways, 11 straight antennas and 13 right-angle antennas on the shelf, Shopify shows 3 of every option. The gateways run out first. After each order Stock Sorted takes the parts off their counts and sets all three options to the lowest count each one draws from.
Indalo-Tech reviewed Stock Sorted on the Shopify App Store on October 25, 2026:
This was the simplest method I found to publish a product with multiple addon options while maintaining stock levels for everything.
The developer was very helpful when I was setting up my store originally and recently responded very promptly (minutes) to a problem that showed up.
Indalo-Tech, Shopify App Store review
Since August Stock Sorted has taken parts off the pools for 117 orders, on 43 different days.
Figures as of November 10, 2026.
Stock Sorted links your variants to shared stock, so each sale updates them all. Free for small stores. Install in 30 seconds.