• Wireless doorbell with infrared motion sensor, suitable for outdoor use • Detects movement within a range of 7 meters and 120 degrees, allowing you to be alerted to the presence of people in the area • Wireless communication between sensor and receiver up to 200 meters using a 433 MHz frequency • Entry alarm that sounds in the office or store to inform about the arrival of visitors • 3 alarm modes: audio buzzer, flashing, buzzer and LED • 38 chime tones and 3 adjustable volume levels from 25 dB to 80 dB, with a silent mode option • Made with IP65 waterproof material, weather-resistant and able to withstand extreme temperatures from -20 ℃ to 60 ℃ • Ideal for entry doors, window frames, hallways, and any place where a movement reminder is needed • Useful for businesses and homes to alert about the arrival of people