Features:

👍 Motion Sensor Door Chime Detection Range: Wireless doorbell chime with long-distance transmission, with anti-jamming function, effectively keep alert. Door chime for business when entering suitable for larger places or high buildings. Can be used as a welcome bell for shopping mall, store, home doorbell, burglar alarm, pet monitor, caregiver pager, etc.
✨Applicable To Many Occasions: Motion sensor doorbell can be used to detect visitors entering or leaving, simple and practical doorbell motion detector can be installed in front door, back door, window, corridor, pet monitoring alarm, office, shopping mall, store, home, hotel, etc.
🎵Motion Sensor Alarm Memory Function: Welcome/Doorbell/Alarm/Color Light, equipped with different ringing melodies, 5 volume levels adjustment, providing a variety of choices for different places to meet the needs. The receiver has power-off memory, no longer afraid of setting data loss. The receiver has a new vibration reminder function, which can avoid disturbing others.
✅Easy to Install Door Entry Chime: No wiring is required and the sensor is self-adhesive to install. Infrared sensor detects surrounding motion and sends a signal to the receiver up to 918ft. Adjust the angle of the Motion sensor silent alarm to avoid false alarms.
💡 Scalable: The number of receiver's and sensors can be selected for actual needs. By matching the light and bell, each receiver is paired with 32 sensors and 8 remote controls. (Tip: The kit does not include batteries. You need to bring your own alkaline batteries or use USB power supply)

Specifications:

Versatile enough to work in any space!

The receiver can be placed on a table or hung on a wall.	The sensor is equipped with a double-sided adhesive sticker, which can be attached to any position.
An Easy Way to Get Noticed when Someone Comes Alarm can be set with different color lights. Multiple sensors, by setting different alarm light colors or music, which can quickly distinguish the trigger area to identify the situation.
	Signaling Over a Wide Range The transmission distance of the receiver and sensor is up to 280m, the volume can be adjusted in five levels, and the sound coverage is wide, so you don't miss every reminder. To avoid interruptions, you can also turn the receiver volume to silent mode.