AJAX (8001.37.WH1) ReX Intelligent Radio Signal Range Extender - White Installation Indoors Compatibility: Hub, Hub plus, Hub 2 Communication range with devices (up to 1,800 m in an open space) Security: Self-adjusting RF output power, Block encryption based on AES algorithm, Device polling Size & Weight: 163x163x36 mm, 330g Battery: Li Ion 2 Ah up to 35hrs of Operation from the pre installed back up battery 1 Year Official Warranty.