5 IN 1 MODE: Home security alarm/welcome signal/doorbell/color light/warning light HIGH SENSITIVITY: Our wireless home alarms are equipped with high-sensitivity infrared sensors to detect movements quickly and accurately. The detection distance is 6 to 8 meters EASY WIRELESS INSTALLATION: No wiring is required, just attach the doorbell's infrared sensor to the wall (by sticking it with adhesive tape or screwing it to the wall), and it will detect motion in its surroundings, whether it's a driveway, porch, door, shed, office, sidewalk, pool, store, and more WIDE DETECTION RANGE: With a distance of up to 280 meters between the receiver and the transmitter of the front door alarm, you can place the sensor anywhere the ideal distance from the receiver to ensure effective monitoring. The 40mm independent speaker has a maximum output volume of 95dB 22 RINGTONE & 8 WELCOME BELLS: The receiver comes with 22 different ringtones, from melody sounds to a simple basic buzzer for personal