Motion detector alarm, communication range up to 100 m (distance between infrared receivers and the receiver). The infrared receiver range is 3-7 m. It warns you in advance of the arrival of guests (or intruders). Motion detector alarm with 38 ringtones, you can choose the one(s) you prefer! 3 volume levels: High, Medium, or Low. Receiver operating modes: single LED flashing or sound and LED flashing. Power supply (receiver): AC 110-240 V. Applications: entry alert, burglar alarm, passage alarm, animal detector, car alarm (indoor), warehouse monitor, closet alarm power supply, garage and tool shed monitor, mailbox sensor, front door or gate detection.