Acti9 PowerTag Energy Sensor The Acti 9 Smartlink system is used to monitor the final distribution boards to any supervision system. Modular Acti 9 devices in the Acti 9 Smartlink system are used to monitor, and measure the electrical distribution boards via a Modbus TCP/IP communication network. The Acti 9 Smartlink system collects the data from electrical distribution boards in real time, thus contributing to achieve efficiency targets or monitoring final loads. The system consists of: Acti 9 Smart Link SI D. PowerTag energy sensors (A9MEM1520, A9MEM1521, A9MEM1522, A9MEM1540, A9MEM1541 and A9MEM1542) are the wireless devices that are directly mounted on a circuit breaker and are connected to Acti 9 Smartlink SI D through wireless communication. The circuit breaker auxiliary allows you to monitor the devices and collects not only energy, but also power and alarm events on the voltage loss. PowerTag energy sensors are mounted upstream or downstream of Acti 9 circuit breaker or Multi 9 circuit breaker. Pre-wired cables. The system offers the following advantages and services: Calculation functions Telemetering applications Monitor load unbalance Monitor power and voltage loss Energy management and regulations Acti 9 Smartlink SI D is a wireless connection to Modbus TCP/IP concentrator.