Features: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) away.5-in-1 multi-mode (Welcome/ Doorbell/ Alarm/ Colorful Light/ Night Light).8 chord music chip, 40mm big horn, 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 stages 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.Ideal 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 your choice.Alarm Mode: Up to 113dB alarm, effectively help to deter the intruder, wake or alert you if at home and possibly alert neighbors.Colorful Light Mode: No sound, 4 colors for your choice, 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.Specifications:ColorWhiteMaterialABSVolume113 ~ 25dBPower Supply (Receiver)Micro USB or AAA alkaline battery x 3 (not included)Power Supply (PIR Transmitter)Micro USB or AA alkaline battery x 3 (not included)Battery lifespan5-7 months (based on 30 minutes per day)Wireless range280m/918ftMotion detecting range2 - 8 m/6.6-26ftRing Volume113dBWorking frequency433.92MHzCertificationCE, CCC, CQCPackage content:1 x Infrared Curtain (PIR Motion Sensor)1 x Alarm Bell (Receiver)1 x Desktop Base1 x Suspension Bracket1 x Double-Sided Adhesive Tape2 x Mounting Screw1 x User Manual