Wireless technology is pervasive in our lives. From a single wireless access point, dozens of devices can be controlled, without the need for hard-wired cabling. Devices can be relocated and reprogrammed using software-based solutions. The EnOncean Alliance is a consortium of companies focused on self-powered interoperable wireless building control systems. The Alliance has developed a wireless standard, as well as devices which rely on small changes in motion, pressure, light, temperature, or vibration for energy. Batteries are typically not required. The ZigBee Alliance has developed the major competing wireless standard.