Features:size: 121*85*50mmProtect and deter intruders in both your home and office with this wireless remote control motion sensor alarm. Ideal for use in Garages and Sheds.Wireless， infrared detector， motion-activated Include 2 direct infrared remote control，Adjustable mounting unit Easy to install 105 dB loudness 110 degree wide angle The motion detector power by 4 AA batteries (not included) The remote controller power by 3 AG13 batteries (included) Note: 10 meters range for detection， after you arm the system. When the alarm is triggered，it will sound for 40 seconds. Package includes:1 x Alarm sensor2 x Remote control1 x Mount bracket