This wireless door sensor alarm set includes 1 receiver and 6 sensors with up to 656 ft / 200 m range. Get real-time alerts via app, adjust settings like delay, timer, and volume (0-110 dB). Compatible with Alexa and Google Assistant. Includes remote control with 4 modes. Easy installation, long-lasting battery. | Vevor | | Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App | White | Best Buy