We have designed automatic transfer switching devices which are used throughout the electrical supply system to increase resilience wherever there is a need for high availability from the power supply. As an enhancement to IPS systems, the recently developed SATS range comprises two changeover solutions. Each solution is designed to meet specific performance and budget criteria: Standard - Suitable for most applications, a balance between simplicity and functionality. Advanced - The transfer device is motorised and the monitoring and control is highly flexible and intelligent.