This Uni-Com Door Chime has an extra loud 98dB(Aa) output and volume control this door chime is ideal for the hard of hearing or use in larger properties. It has 30 different chime melodies to choose from the 98dB(A) sound output with volume control and a flashing blue chime alert you will always know when somebody is at your door.The Door Chime is wireless so no wiring is required and with an extensive operating range of up to 200m you never have to miss a visitor or delivery. It can be wall mounted or used as free-standing unit meaning it can be placed around your home and garden.With 3 operating modes - chime sound only blue LED alert light only and both together you can set your Door Chime to operate exactly as you want it to. Compatible with all other Wireless + Uni-Com door chimes so you can add extra bell pushes and chime units to extend your door chime system around your home. The memory feature means the pairing is memorised when batteries removed.SpecificationsColour: WhitePower (Chime Unit): 3 x AA Batteries (Not included)Power (Bell Push): CR2032 Battery (Included)Melodies: 30Output: 98dBVolume control: YesOperating distance: 200mSize: 125 x 125 x 38mmPTDUNC68686