5-In-1 Multifunctional: Receiver has 5 modes, Welcome/ Doorbell mode(36 Tunes available)/ Alarm/ Colorful light/ Night Light mode, can fit different situation and meet various needs. Wireless Motion Sensor Alarm: Working range is up to 120M/400FT in the open air and does not interfere with other equipment in your home. Attention Please: Metal will interfere with the signal and shorten the transmission range. Remote Control Included: With remote control, it is very convenient to turn on/off receiver, choose modes, switch tunes and volume, pair extra sensor with receiver. Remote control distance is up to 30M/98FT. Expandable: More receivers, magnetic sensor, Infrared sensor or remote control are optional, perfectly meet your actual needs. Package includes 1 Receiver, 1 Contact Sensor and 1 Remote Control. Easy Installation: No cables needed, double-sided tape or screws can hold infrared sensor firmly. It can be used in home, office, retail store, mailbox, garage, driveway or other. Receiver 5 Modes: Welcome/ Doorbell mode/ Alarm/ Colorful light/ Night Light Power Supply: 3* AA battery(Not included) or micro USB(Not included) Motion sensor Detection Range: 2-8m Detection Angle: 100 degree(horizontal); 15 degree(vertical) Battery: 2*AAA battery(Not Included) Remote control Remote control is used to control receiver. With remote, you do not need to press keys on receiver anymore. 4 Keys: a) Left Key: Turn ON / Mode Switch key b) Right Key: Turn OFF key c) Select songs key d) Volume key 4 steps to pair Motion Sensor or Remote Control with Receiver: 1) Load batteries for Receiver and Sensor if you haven't 2) Press "Power/Mode key" of the receiver for 3 seconds to turn off it 3) Press "Volume key" for 3 seconds, receiver will enter into learning mode 4) Waving hand in front of the motion sensor/ Press any key of the remote control. The indicator of motion sensor or remote control will flash once, which means the pairing is successful. Package Content: 1 x Receiver, 1 x Motion sensor, 1 x Remote control, 1 x Manual