1.5V AAA (not included) or 5 V DC adapters (not included)Applications: entry alert, intruder alarm, corridor alarm, critter detector, car alarm (interior), warehouse monitor, closet alarm power supply, garageand tool shed monitor, mailbox sensor, front door or gateway detection.Features:Communication range between sensor and receiver: 70 meters (open space)Sensor range: 3 to 7 metersRange anglesensor power: 110 degrees Sensor power operation: 3 AAA batteries or 5V USB power supply (not included in delivery) Receiver power supply Operation: DC 110V - 240V 3 volume control levels: high, medium, low 2 Alarm mode:ringtones + LED display and LED displayTotally 38 different ringtones to welcome your guestsmulti usesensing range38 tonesFor different place to useOur alarm kit is ideal for use at home, office, factory, store or shopping mall.WirelessThe sensor range is 3 to 7 meters verticallyWith RingtonesThere are 38 different ringtones.You can adjust it using the switch on the side of the receiver.And the volume can also be adjusted.commercial use home use detective anti theftHome Security AlarmDiaper bellPassage alarmAnti-theft alarmPassage detector alarm, The range of the infrared receiver is 3-7 m.Notifies you in advance when guests (or intruders) arrive.Motion detector alarm with 38 ringtones, you can choose the one(s) you prefer!3 volume adjustment levels: High or Medium or low.Receiver working mode: single LED light flashing or both sound and LED flashing.Power supply (receiver): AC 110-240V.Power supply (transmitter): 3 batteries