FrSky has enhanced the performance and capability of the original sensor line, resulting in the development of the new ADVANCE (ADV) series sensors. All ADV sensors fully support FBUS protocol and they are also S.Port compatible. With the FBUS protocol, the ADV sensors can be seamlessly paired with the FBUS capable receiver which further simplifies model builds.
The FLVS ADV w/o Screen voltage sensor can measure the voltage range for 2S to 8S Li-Po batteries. This is an obvious choice for accurate measurement of Li-Po batteries with big capacity.
Manual and firmware here