Irritrol's TW-EG36-SPED 2-Wire Controller with up to 36 Decoders comes from the Rain Master Twice Series. This controller assembly has a capacity for up to 36 decoders, and comes with a stainless steel security pedistal. Irritrol has made their name as a brand by selling and marketing exclusively to the professional installer, as a result their products are geared to be dependable and durable. Irrirtrol is now making their products available to you through our website. If you are looking for a product line that will last year in and year out, Irritrol is the brand for you.