I use 3 products: single-pole light switch, round smart plug and rectangular smart plug. They all perform exactly as advertised, work great and easy to use. The UI (user interface) will present differently based on the model. It is different for the two smart plug shapes but not a deal breaker. Probably due to different firmware update limitations. I recommend the rectangular smart plug for adjacent plug access, but both work fine.
Works good easy setup
I have used dozens of these through the years including high humidity/salty air places. They have always worked without fail.
Originally purchased my first set from Amazon Prime and loved it, but it was not being offered anymore, so I went to Teckin's website and purchased it (& paid for shipping) - that's how much I liked this product.