Wireless Doorbell, TeckNet Waterproof LED Flash Door Bell Kit Operating at 492-Feet Range with 25 Chimes, 1 Self-powered Push Button, 1 Plug-in Receiver, Easy Installation Compact and Secure Design - TeckNet wireless doorbell with Plug-in receiver operating range of over 492 feet. CE, FCC, RoHS certified Battery-Free & Waterproof Transmitter - Just push the doorbell button and enough energy is created for the transmitter. It is rated IP44 waterpoof and suitable for outdoor use 25 Different Ringtones - There are 25 different ring tones with 3 levels of adjustable volume (High/Medium/Low) from 50db to 80db. Features with LED flash alert when the bell is ringing Simple Installation - Simply plug the receiver into a standard wall socket. Transmitter can be installed by tape or screw Package Contents - 1xWireless Transmitter, 1xPlug-in Receiver, 2xScrews, 2xScrew-Joint Couplings, 1xDouble-Sided Adhesive Tape, 1xUser Manual, 1xWarranty Card