Product review (3 stars): Homebrew application : Better overall but with significant limitations
I'm using this for a dual stage fermentation temperature chamber. Basically I'm controlling a chest freezer and adding a heating element.

After a good deal of research it seems the STC-1000 is the go-to for home brewers. I ended up buying this one instead but would like to offer a list of pros and cons vs STC-1000

Pros:
-More programmable than STC-1000
-Manual not a one page incomprehensible Engrish "phone-in"
-Higher relay ratings than STC-1000. I believe double. My inrush current for chest freezer exceeds STC-1000. While I don't imagine the STC-1000 to immediately fail I considered that it might reduce it's life
-I don't trust electronics manufactured for the value segment by a company that doesn't even care enough to produce manuals that respect their customers. The TC-9102D's manual is comprehensive, yet to the point and very helpful. I know I covered the manual point already but it just speaks to overall perceived quality of the brand and hence trust of the components

Cons:
-Quite physically large
-There is very little clearance inside the unit for your wiring. I mean, very little. Currently I am smushing my wires and wire nuts in there by forcing the screws to tighten the cover. The STC-1000 is standalone so you can mount it in a project box. This in my opinion is a huge drawback.

Given the choice again I'd still select this unit as it's higher quality overall but would have strongly preferred a standalone unit rather than being forced to wire 14 AWG inside a very tight space. It was very frustrating. And by very, I mean I almost gave up. I'm no expert but I've been wiring industrial, residential and computer level electronics for years.