TH Ultra-Long Distance Wireless RangeThis wireless doorbells boasts a remote connection of up to 300 M/1000 foot and does not interfere with other equipment in your home. 52 Loud ChimesThe Plug in doorbell receiver bell has features 32 tunes and 5 adjustable volume levels ranging from 0 to 120 dB. It will remember your settings even if power outage. LED IndicatorThe 7 color LED light indicator on the plug in receiver flashes when the transmitter is pressed and a signal is received. They alerts those with impaired hearing or when the doorbell sound is (temporarily) unwanted. Mute the wireless waterproof doorbell if a ringtone is not desired and get notified visually by the LED instead when someone shows up at the door. Weaterproof ; DurableUltra-low power consumption and CR2032 lithium battery gives a lifespan of up to 3 years; no need to worry about frequent battery replacement; IP55 waterproof rating to withstand the harshest weather (-4 F to 140 F). Easy to Install and SETSimply plug the receiver into a power outlet and attach the transmitter to the exterior wall with the provided screws or adhesive patch; there is no need to reset tune and volume level after a power outage. Up to 20 additional same model receivers and push buttons can be paired. Colour: Black Size: main unit 6.6*6.6*3cm, button 6.4*3.3*1.8cm Delivery Quantity: 1 Piece