Uni-Com Portable Door Chime Never miss a visitor again with this portable door chime from Uni-Com. The wireless design means you can take it into any room of the house or choose leave it in one spot while the impressive 120m operating range means you can even take it into the garden with you so you don't miss guests when you're outdoors. It features eight melodies to choose from, a red light alert and can be connected up to four bell pushes, so it's great for homes of all sizes. Operating distance: 120m 8 melodies Sound output: 85dB Connects up to 4 bell pushes Includes: Door chime and bell push Requires 2 x AA batteries (available separately)