The 3rd generation in MIP System technology allows you to choose different sounds for different bell pushes and other transmitters with the flick of a switch, so you can identify which door or room has been activated | Compatible with previous MIP System generations | 32x High quality true sounds custom-made for the UK market, which includes Big Ben, Westminster chimes, 6x tubular bells, 5x ding dongs, buzzers, festive tunes, sound effects and Stop Thief message | The 3rd generation has a huge 200m wireless unobstructed range, expandable further by using the MIP Signal Booster accessory | Includes a Window Sticker to ward off cold callers from your door | Easy DIY installation, no wires, no fuss | Plugs into any standard UK wall socket with low power consumption | Variable volume control | Current melody playback | Flashing strobe indicator | Waterproof bell push with battery included | Chime dims: H9.5 x W5.5cm approx.