The Nexus Wireless Call-Point is a battery-powered, wireless emergency call-point that integrates with the Nexus Wireless Alert system. It is available in a range of colours and is suitable for various applications, such as Fire Alert, Lockdown and Exclusion Zoning. When the call button is pressed, the alarm transmission is sent to all Nexus units on the same site that are within range, up to 500m (Nexus sounder or annunciator units have a maximum range of up to 1km). Each Nexus unit can then 'hop' the transmission up to 16 times between units using the secure Nexus wireless mesh protocol, giving the Nexus system a maximum range of up to 16km. The self-contained unit is quick to install with no wiring and is weather resistant to IP66 standard (NXECP only). The unit is powered by a 3V lithium battery and boasts a battery life of up to 4 years, making the Nexus Wireless Call-Point highly efficient on maintenance and installation costs. As the unit is fully wireless, it may be relocated easily or installed in difficult locations where wiring would be costly to run.