VicTec Wireless Doorbell Security Burglar Alarm Operating at over 100m with 36 Chimes & Motion Sensor Light/Emergency Light with 5 LED Bulbs for Apartments, Office, Hotels, Homes - White 4-in-1 Functions: This device combines wireless doorbell, burglar alarm, motion/beam sensor light, emergency light, calling buzzer as one. With strong penetrating ability, and the wireless operating range can more than 100m. Security Burglar Alarm: Built-in intelligent and sensitive PIR sensor, with 40mm diameter super large horn, loud enough, it can send out alarm with great deterrent force which can scare off burglars. Easy to install, install it on window, door, corridor with adhesive tape or anchors and screws. Motion/Beam Sensor Light and Emergency Light: With 5pcs ultra-bright LED bulbs and automatic sensor switch, lights can automatically turn on when it is dark and motion is detected. 20 seconds later, lights will go out automatically (when human beings or animals are not in the detecting area) to save energy. Self-learning Code System: One remote transmitter button can be paired with several receivers, and one receiver also can be paired with several remote transmitter buttons. Wide Application: Can be used as calling buzzer, it is also suitable for customers in restaurants, patients in hospital, children, pregnant women, elders. When they need help, just press the remote transmitter button. Advanced ABS material, robust and strong enough to withstand abrasion and corrosion.