store owners during the day, anti-theft protection at night, L door leaf / welcome / doorbell / alarm / colorful light / 5 in 1 multi-function lighting Transmission range up to 280 m in free space 8 chord music chip, 40mm horn, 36 chime melodies Remember your last tuned melody and volume when you turn it off Multi-colored LED lights, adjustable brightness, different inputs by different colors 4 adjustable volume levels (high/high/medium/low) from 113 to 25 dB Ideal To Announce Visitors. 5 welcome languages to choose from. As soon as someone approaches your front door to trigger an alarm, the sound you selected will be sent. Provide security to your home. When you sleep dead, you will be woken up when someone is near the motion sensor. At night, it can be activated in alarm mode to protect your property. Never Miss Visitors. There are 36 ringtones and 4 adjustable volume levels for a volume range of 25-113dB, ideal for the hearing impaired. Several ringtones can be set for different receivers, so you can see your visitor in front of which door. Silent Colored Lights. If you don't want to be disturbed, you can set the color light mode. When kids are sleeping at home or misunderstanding, they can recognize someone is coming by seeing the colorful light in silent mode. Dog Bell Sensor mounted above your doors. When the cat or dog comes back from the side of the road, it will remind you to open the door, Since then it no longer had to wait in the cold or in the rain. Security and Protection With this wireless passage detector, you can be notified when your children, your pet or the elderly leave the house. Old Autumn Warning A rescue for your elderly parents. If your parent tries to slide out, they may fall before anyone remembers. So the receiver can be mounted in your room to warn you. Nightlight Mode In this mode, the soft light will immediately remind you when your family returns after overtime. To protect against theft, you can choose the night light instead of the loud alarm as an immediate alarm.