Detect intruders in remote areas inside your home with this portable infrared motion alarm. A flashing light and high-pitched tone activates when the alarm is tripped. The alarm can also be used as a door chime when a door is opened. The alarm can be armed and disarmed with the RF remote control. The alarm is powered by four AA batteries (not included). The remote control is operated by button cell batteries (included). The alarm is also A/C adapter compatible. One-year warranty.