Tektalk Portable Wireless Door Bell Chime and Push Button with 36 Chimes & 4 Volume Levels&mdash;White (1 Remote Button and 1 Plug-in Receiver with LED Indicator) BEST Gift / Holiday Presents For Families & Friends. IP44 WATERPROOF MATERIAL - Made of IP44 waterproof material, Tektalks premium doorbell is safe for outdoor use, especially for children and pregnant woman. Flat surface dustproof design allows for convenient cleaning. 36 CHIMES & 4 VOLUME LEVELS - 36 chimes from the traditional Ding Dong to various well-known melodies offer more choices for your favor. 4 levels of adjustable sound volume give you complete control over the sound of your door chime. Good option for nap time without disturbing your infant or young child when they are asleep. 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 fix, screws can be fixed through the knock outs on the base of the transmitter. The receiver can be plugged into an electrical outlet in your home. When pressing the transmitter, the blue flashing light indicator gives you a visual form of notification. Low power consumption helps you save energy. 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 working on your computer in the home office or sharpening your culinary skills in the kitchen, you will be promptly notified by the chimes and flashing blue light when someone pressing the push button. AVOID INTERFERENCE & MULTIPLE USAGE - Special design of auto-learning codes helps to prevent interference from other users or appliances. Highly portable wireless design lets you take it with you to the patio, your garage workshop, or your home office. Can be used to send emergency massage or care for the old or patients. PROMOTION: For more details, please refer to Description or Special Offers and Product Promotions.