Password Alarm If a person enters the detection area of the infrared alarm, the infrared alarm will have a delay of 5 seconds, which is convenient for the owner to recognize. After 5 seconds, if the correct password is not received, a 30-second harsh alarm will sound. The alarm volume is 105 DB.Detection RangeThis Home Security Alarm provides 105 degrees wide detection angle, and 3-5 meters detection distance, never miss anything happened in the detection area and protect your family and property.PIR Infrared Sensor This Motion Sensor Alarm built in PIR motion sensor that will activate the alarm if any movement is detected. When the PIR sensor detects human movement the alarm will sound alerting you to a potential attack on your home or an intruder.Easy Installation It is simple to fit, there are no wires required, just put the required batteries in, fix to a suitable surface. When installing, avoid the infrared alarm device near the cold and heat source, such as hot and cold air outlet, air conditioning air outlet, electric heater, air cooler, etc., avoiding the door to the right.Application The Motion Sensor Alarm can be situated to cover the front door, back door, garage, shed, outbuildings etc.