Long Range: Operating range up to 1,000ft/300m in open area ensures you to hear the bell and answer the door in time.ROBUST BATTERY-FREE TRANSMITTER: Self-powered push button converts kinetic force into electric energy, no batteries required;Waterproof Design: IP55 dustproof and waterproof rating; works between -4 °F to 140 °F; withstands various harsh weather conditionsMultiple Volume Option - There are 28 different ring tones with 4 levels of adjustable volume from 20dB to 110dB. Flashing light with audio alert indicators which is easy for people including the hearing impaired to notice.Built-in LED Indicator - Our wireless doorbell receivers and transmitters feature LED indicators that creates visual alerts for the hearing impaired.Wireless Plug-in Receiver - The portable wireless plug-in receiver plugs into any standard outlet.MEMORY FUNCTION: Preserves your last-set melody and volume level after a power outage; no need to reset to your previous settings; convenient and easy-to-use design for an enhanced user experienceEasy Installation: Just plug the receiver into a socket and affix the transmitter on a wall using the provided accessories; a piece of double-sided adhesive patchFeatures[BATTERY FREE] Self-powered push button converts kinetic force into electric energy, no batteries required[PERSONALIZE] 28 unique ringtones and 4 volume levels with up to 110dB[BUILT-IN LED INDICATOR] Features built-in LED indicators that create visual alerts for hearing impaired[WORKING RANGE] 1000ft/300m operating range[INSTALLATION] Wire free and easy to install with the included accessories[LIMITED LIFETIME WARRANTY] Includes a Limited Lifetime WarrantyPacking IncludedSelf-Powered Wireless Doorbell
