Motion Door sensor
light sensor range:3-6meters
"I" can speak 8 languages
"I" can detect motion

Motion door sensor /light door sensor

1: light sensor range:3-6meters
2: acquiescence music: hello,welcome in 8 languages including english ,Arab,French,Russian,Italian,Korean,Portugal,Spain . also other 25 multi-melody  for options
3: packing: plastic & electronic

4: Use 3AA battery for this device,or use external power supply transformer of DC 4.5V,300MA