【Long Operation Range】This wireless doorbells boasts an operating range of over 400m/1300ft in open area when there are no obstructions. You will always be easily informed by our door bell chime kit when someone is calling from outside, ensures you will never miss a visitor 【IP65 Waterproof & Durable】IP65 Rated doorbell transmitter with waterproof ring seal, works between -20°C to 60°C, withstands various tough weather conditions. With its ultra-low power consumption CR2032 lithium battery, TECKNET wireless doorbell has a lifespan of up to 4.5 years, no need to worry about frequent battery replacement 【3 Working Modes】 The cordless doorbell has three working modes to meet your needs in different occasions. When someone is resting, choose the silent mode with LED light flashing, or the ringing mode / simultaneous ringing and LED light working mode in daily or party.The blue LED ring provides effective visual reminders for the door bells wireless cordless 【Remenber Your Selection】Memory function makes the plug in doorbell remember the last ringtone and volume level you selected, so there's no need to reset it even after a power outage 【60 Different Ringtones & 5 Volume Control】The doorbell features 60 chimes and 5 level adjustable levels (0db to 120dB) to suit your needs. You could choose the best way to be notified when someone is at your door 【Easy to Install & Use】Easily plug the wireless door chimes into an electrical outlet (no batteries required for main receiver). Push button can be fixed to the doorframe with screws, or attached by using double-sided adhesive tapes. Simply mount the doorbell where needed and you are ready to go. Support available for 36 months (Registration Required)