Uarzt Portable Wireless Door Bell Chime and Push Button with 36 Chimes & 4 Volume Levels&mdash;White 1 Remote Button and 2 Plug-in Receivers with LED Indicator BEST GIFT FOR FAMILIES & FRIENDS, IP44 WATERPROOF MATERIAL - Made of IP44 waterproof material, Tektalk's premium doorbell is safe for outdoor use, especially for children and pregnant women. Flat-surface and dustproof design allows for easy cleaning. 36 CHIMES & 4 VOLUME LEVELS - 36 chimes from the traditional Ding Dong to various well-known melodies offer a wide variety of choices to satisfy your unique taste. 4-grade sound adjustment gives you complete control over the volume of your door chime. Good option for nap time without disturbing your baby or young children. TRANSMISSION RANGE UP TO 280M (APPROX. 1000FT) IN OPEN AREA - Reaching a distance of up to 280m (approx. 1000ft) when there are no obstructions, whether you are busy with your computer at home or sharpening your culinary skills in the kitchen, you can promptly notify the chimes and flashing blue light when someone presses the push button. EASY INSTALLATION WITHOUT DAMAGING THE WALL & LOW POWER CONSUMPTION - With alkaline battery, the transmitter can be mounted with the adhesive tape without damaging the wall. Or for a more secure installation, screws can be fixed through the knock on the base of the transmitter. The receiver can be plugged into an electrical outlet in your home. When the transmitter is pressed, the blue flashing light indicator gives you a visual of notification. Low power consumption helps to save power. AVOID INTERFERENCE & MULTIPLE USAGE - Special design of auto-learning codes helps to prevent interference with other users or appliances. Highly portable wireless design enables you take it with you to the patio, your garage workshop, or your home office. Can be used to send emergency messages or care for the old or patients.