Shop keeper in day time, anti-thief in the night. Place the PIR motion sensor at the entrance to your driveway or anywhere you want to be alerted to motion, it detects movements and sends a wireless signal to the portable receiver from up to 918 feet (280m) . 5-in-1 multi-mode (Welcome/ Doorbell/ Alarm/ Colorful Light/ Night Light). 8 chord music chip, 40mm , 36 chime melodies, remember the last setting of melody and volume level once powered off. Colorful LED lights, adjustable brightness, distinguish multiple entrances by different colors. 4 adjustable volume (Loud/ High/ Middle/ Low) from 113 ~ 25dB.The receiver can learn from up to 32 wireless sensors like PIR motion, magnetic or vibration sensor as well as up to 8 remote controllers. Low battery indication. perfect for front doors, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store. 5-In-1 Multi-Mode: Welcome Mode: 5 languages of "Welcome", suitable for shops, stores, restaurants, supermarkets... Doorbell Mode: Door open chime, 36 selectable chimes tunes for . Alarm Mode: Up to 113dB alarm, effectively help to deter the intruder, wake or alert you if and possibly alert neighbors. Colorful Light Mode: No sound, 4 colors for , suitable for quiet environments. Night Light Mode: Can be floodlight, when the magnetic sensor activated, the receiver automatically turn on the light, with 4 adjustable levels brightness. Volume : 113 ~ 25dB Power Supply (Receiver) : -USB or AAA alkaline battery x 3 (not included) Power Supply (PIR Transmitter) : -USB or AA alkaline battery x 3 (not included) Battery lifespan : 5-7 mon (based on 30 minutes per day) Wireless range : 280m/918ft Motion detecting range: 2 - 8 m/6.6-26ft Ring Volume: less than equal 113dB Working frequency : 433.92MHz Colour:White Material:plastic Number of Sensors:B: 3 Package Contents: 1 x Host 3 x Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.