TECKNET Wireless Doorbell with 2 Receivers 2 Push Buttons, IP65 Waterproof Twin Door Bells Wireless Cordless with RGB Flash,400M/1300ft Long Range Plug in Door Bell with 5 Volume Levels & 60 Chimes

400M Ultra-Long Wireless Range: The TECKNET wireless doorbell offers an extended range of up to 400M/1300ft, providing a reliable signal that covers your entire home or property. With 2 receivers and 2 transmitters, this door bells wireless cordless system is perfect for large houses, warehouse, or multi-story buildings. Whether you're in the basement or the backyard, you’ll never miss a visitor

IP65 Waterproof & Long Battery Life: TECKNET doorbell wireless features an IP65 waterproof design, built to withstand extreme weather conditions from -4°F to 140°F. Engineered for energy efficiency, the battery of doorbell transmitters delivers up to 4.5 years of continuous use—minimizing maintenance and eliminating the hassle of frequent battery replacements

3-in-1 RGB Light Working Modes: This plug in doorbell wireless system offers 3 working modes: sound only, light only, or both sound and RGB flashing lights. It’s especially suitable as loud doorbells for hard of hearing or when silence is needed for resting babies or shift workers. Easily switch modes to fit any environment

60 Melodies & Smart Memory Function: Choose from 60 pleasant tunes and 5 adjustable volume levels (0–120 dB) to suit your preference. The door bell system includes a memory function that retains your last settings after power outages—convenient and worry-free. Whether you prefer a soft chime or a loud doorbell, this doorbell adapts to your needs

Easy Installation & Versatile Application: Set up your doorbell chime in minutes—just plug in the receivers and mount the transmitters by screws or the adhesive pads provided. Perfect for houses, offices, schools, apartments, villas, warehouses, hotels, factories, and more. 36-month support available (registration required)