BT Elements 1K Twin: A Set of 2 Weatherproof Digital Cordless Phones. The BT Elements 1K digital cordless phones are affordable, while giving you all the freedom you need to take your calls whenever, whereverwith an outdoor range of up to one kilometre! This great environment resistant phone twin-pack allows you to take your calls anywhere, and is packed with all the basic, easy to use features you need. The illuminated screens make this a great choice for outdoor use in particular.. Small Phones, Huge Range. The BT Elements 1K offers clear reception over longer distances, meaning you can enjoy talking on the phone with crystal-clear call quality for up to one kilometre outdoors. The phones are also fully GAP compatible, meaning you can expand your base system with up to five handsets, allowing you to receive incoming calls and make outgoing calls from anywhere! You can easily send text messages from your cordless phones, and save up to 50 numbers to the call list, as well as 30 num