Good quality. Tested and everything works fine. Fast shipping. I recommend.
Fast delivery as always! Device works perfect: I programmed it to accept and detect 6 different kinds of Euro coins. It distinguishes among these coins perfectly. In case of doubt it returns the coin. I already did some oscilloscope measurements, because I did not fully understand the device's description, and wanted to know more about the pulse timing. I include my measurements here again, hoping that other buyer may profit from this. For battery-powered applications: Be aware that the peak current is about 650 mA (not 300 mA as written in the description) during short time (100 ms, not 500 ms as written in the description) after a valid coin is accepted. I am (again) very happy with this device! Thanks!