It is small enough that it can easily be hidden, yet it picks up audio as well as video! The Interface board picks up infra-red light, allowing it to be used at night or in dark places. • Quick connection to a TV or VCR • Runs from a 12 to 15 volt power supply • Great for watching the kids outside while you’re busy inside • Includes a microphone allowing audio as well as video outputs • The ultimate baby monitor! • Educational and fun to build! • Informative manual leads you through step by step