Shop owners during the day, anti-theft protection at night, door blade L / welcome / doorbell / alarm / colorful light / multi-function lighting 5 in 1 Transmission range up to 280 m in free space 8 chord music chip, 40mm horn, 36 chime melodies Remember your last melody and volume set when you turn it off Multicolor LED lights, adjustable brightness , different inputs by different colors 4 adjustable volume levels (loud/loud/medium/low) from 113 to 25 dB Great For Announcing Visitors. < p>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 awakened when someone is near the motion detector. 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 range of volume from 25 to 113 dB, ideal for hearing impaired people. Multiple ringtones can be set for different receivers, so you can see your visitor at which door. Silent Colorful Lights. If you don't want to be disturbed, you can set the color lighting mode. When children are sleeping at home or are misunderstanding, they can recognize that someone is coming by seeing the colorful light in silent mode. Dog Doorbell Top-mounted sensor from your doors. When the cat or dog returns 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. Safety and Protection< /p> With this wireless passage detector you can be notified when your children, your pet or the elderly leave the house. Autumn Warning Old A lifesaver 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 alert you. Night Light Mode In this mode, the soft light will remind you immediately when your family returns after overtime.< /p> To protect yourself against theft, you can choose the night light instead of the loud alarm such as an immediate alarm.