Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month
Easy to use, presence of simple AT commands which allow to change key settings (Baud rate, user name, password). LED can be connected to indicate device status. It seems it works ok with 5V logic levels.
The price is reasonable.
Quality is not very good (I would say satisfactory, but not excellent). Last month I bought 10 items. One of them was defective (doesn't work at all).
Buy it if you want to connect to devices with UART from your PC or smartphone
Good product with reasonable price, but quality must be better.
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