The Elspec SPG-521A-0090 Pure BB Extension Module is an optional add-on designed to enhance battery capacity and communication capabilities for remote data collection. It supports connectivity via LAN, Wi-Fi, or cellular networks.

Equipped with a built-in rechargeable battery, the module enables 5 to 8 hours of continuous operation without requiring an external power source. It features a LAN port for PC communication, a USB port for data transfer, and DC power input. Wireless communication is supported via a Wi-Fi dongle.

The module connects seamlessly to the Pure BB Handheld Power Quality Analyzer through a 50-pin extension socket.