Waterproof Wireless Outdoor Doorbell with 3 Receivers + 2 Battery-Powered Transmitters, 58 Chime Melodies, 5 Volume Levels (120 dB), LED, 300m Long Range Doorbell for House, Apartment, Black

【Wireless Doorbell】 IP55 waterproof outdoor wireless doorbell, ideal as a house doorbell or wireless outdoor doorbell — a convenient doorbell for homes, apartments, offices, or businesses. 【58 Melodies】 Wireless doorbell with 58 melodies, 5 adjustable volume levels (0–120 dB), and a memory function that saves the last selected ringtone. With a bright LED and powerful volume, you'll never miss a visitor. 【Battery Powered Button】 Transmitter powered by a long-life battery (up to 3 years), wireless doorbell with a CR2032 battery, IP55 waterproof, and resistant to temperatures from -20°C to 60°C. 【Long Range & Expandable】 Long-range wireless doorbell with a 300 m (1000 ft) connection and stable connection. Expandable system: one receiver can be paired with up to 20 transmitters, and one transmitter can control multiple receivers. 【Easy Installation】 The button can be quickly installed on the door with screws or strong 3M adhesive tape. Simply plug the receiver into a wall outlet and your wireless doorbell is ready to use. SECRUI Wireless Doorbell SECRUI Wireless Doorbell Plug-in Receiver Battery Operated Transmitter