
1) The part number says 3 CDS but the manual actually calls it "LDR". It only has 1K, 10K, 220R and 330R.3) There are complex females on the layout. Some of them are easy to enter contacts while others are very complicated. 4) Display 1602 does not work. 5) The 9V battery is a normal battery. 6) Requires a piezo vibration transducer which is not included. 7) Requires a microphone sensor which is not included. 8) Advertised to use LM35 sensor but includes lower quality DTH11. 9) The PDF uses the wrong charts. It shows using an LM35 sensor, but the diagram shows RFID. 10) Summary: It is better to buy the Arduino separately along with the few sensors that come with it.

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