Motion and Visual Alarm: The motion detector has a intelligent detection with a range of 6m-8m, it can emit a flash and a alarm up to 110dB when it detects motion. You can operate it with the remote control and the remote distance is up to 8m Multiple Function: Welcome Mode/ Alarm Mode/ Smart Mode 3 modes and 4 volume levels (25dB-110dB) can sufficiently meet your demand. Low battery reminder function would remind you to replace the battery for the motion sensor alarm in time 17 Voices Option: This motion sensor alarm has 17 voices can be chosen, including "Welcome" in 11 national language and 6 other melodies (Welcome mode and Smart mode can choose the voice by your preference). The "Welcome" language includes: American English,English, French, Russian, Spanish, Portuguese, Thai, Japanese, Korean, Malay, Arabic Two Types of Charging: Motion detector alarm is powered by 3 AAA batteries (Not Included) or USB cable (Not Included). The remote control is powered by 1 coin cell battery (Included, remove the insulation sheet of the remote control before using) It can flexibly install in home, shop, office or garage