The RB Smart LCD is a battery display for our newest Micro and Nano series batteries with a RS458 Cat6 port. In addition to the BTBMS smart app, you can have a physical display for real-time monitoring of a single battery. The RB Smart LCD displays: Battery Voltage* Individual Cell Voltages Amperage In/Out (net metered)* Time Left to Empty/Full* Status Alarms Charge/Discharge State Capacity Left* Temperature* Cycles *data points that can be monitored for multiple batteries in parallel All items above are also shown in the Bluetooth app, therefore the LCD is not required to view battery data. The LCD is not made for batteries in series. Comes with either a 3m cable for the LCD or a LCD to female Cat6 port to add your own ethernet cable of any length. Please specify which cable you require when ordering (default is 3m). Batteries the RB Smart LCD is compatible with:Micro 12V 320AhMicro 12V 640AhMicro 24V 320AhNano 12V 170AhNano 24V 170Ah