The Uni-Com Wire-free Bell Push is water resistant (IP44 rated) with a blue LED indicator light and nameplate.. Suitable for use with all Uni-Com Wireless + Door Chimes. The bell push is wireless, so no wiring is required, and with an extensive operating range of up to 150m, you never have to miss a visitor or delivery. Easy to fit and set-up. It comes complete with a CR2032 button cell battery, fixing screws and adhesive pads.