* Secure sound lights * Displays baby's sound level * 49Mhz technology * Clarity of an underutilized bandwidth * 600 foot range * Indoor and outdoor convenience * Two Channels * Helps minimize interference * Operates on battery power or household electricity * Provides convenient parent portability * Battery power option on Receiver ( 1 9V, not included) * Provides convenient portability * Low battery indicator * Notifies parent when to replace batteries. Yellow=replace green=on * Power indicator *Assures you are connected * Sensitive microphone * Picks up quiet sounds * Belt clip * Attachment method for parent portability