Maximum range of 100 m between the infrared detector and the receiver (without obstacle). <br> 3 levels of volume adjustment: high, medium and low. 2 alarm modes: buzzer + LED or LED only. You have a total of 38 different ring tones to welcome your guests. <br> The range of the detector is 3 to 7 meters in the vertical direction and 3 to 5 meters in the horizontal direction. <br> Receiver dimensions: 76 x 80 x 33mm. Detector dimensions: 80 x 59 x 45mm. Perfect alarm system for windows, doors, garage doors or other openings, whether in a private residence or in a shop. <br> Detector power supply: 3 AAA batteries or 5V power supply with USB connectivity (not included). Receiver power supply: 110-240 V DC power supply. <br> Specifications: <br> Range between detector and receiver: 100 m (unobstructed). <br> Detector range: 3 to 7 meters in the vertical direction and 3 to 5 meters in the horizontal direction. <br> Dimensions of the detector: 80 x 59 x 45mm. Receiver dimensions: 76 x 80 x 33 mm. <br> Detector power supply: 3 AAA batteries or 5V power supply with USB connectivity (not included). Receiver power supply: 110-240 V DC power supply unit. <br> Scope of supply: <br> 1 detector. <br> 1 receiver.</p > 1 set of mounting accessories. <br> 1 set of user manual <br> Note: The data is all measured manually, please allow 1 to 1 error. 3cm, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.