This is DIY thermoelectric peltier refrigeration cooling kit. It comes with 12706 peltier modlue, required heat sink + 2 Fan. Very useful for making cooling system.
This mini Doppler Radar Sensor With Digital Output-RCWL-0516 is equipped with supporting DC 4-28V wide voltage It will automatically continuously output the high level TTL signal when there is motion. 360 degree no blind angle detection and maximum 7m sensing distance. It is perfect for DIY microwave motion sensor light switch, human sensor toys, smart security devices, etc.
