AVANTEK wireless doorbell, 400m range, IP55 waterproof outdoor doorbell with 2 plug-in receivers, 52 melodies, 5 volume levels, receiver simply plugs into outlet.

"400 METER WIRELESS RANGE: With a wireless range of 400 meters, this doorbell ensures you won't miss any visitors, whether you're in another room or on a different floor; the set includes 2 plug-in receivers and 1 transmitter and does not interfere with other household appliances or neighbors. WEATHERPROOF & DURABLE: Features a CR2032 lithium battery with a lifespan of up to 3 years and low power consumption; IP55 certified for dust and water resistance and operates between -20°C and 60°C; built to withstand a variety of challenging weather conditions. WIDE SELECTION OF MELODIES: With a 40mm stereo speaker for clear sound; 52 selectable melodies; adjustable volume with 5 levels, with a maximum of 115 dB; switch between melodies with the next or previous buttons and enjoy pleasant sounds whenever the doorbell rings. MEMORY FUNCTION: Stores your selected melody and volume so they remain unchanged even after power outages; no manual adjustments needed, providing effortless convenience. EASY SETUP: Simply plug the receiver into an outlet and mount the transmitter on your exterior wall with the included screws, anchors, keys, or adhesive pads; easy installation with everything you need readily available."