The FAS40 ADV current sensor can be used to measure current (maximum 40A) and voltage (up to 6S) when connected between a battery and ESC. 
 
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.
 
Dimension: 65.24*15.7*16.6mm (L*W*H)
Weight:15g
Measurement Range: 0-40A
Current Consumption: 16mA@5V
Maximum Safe Current: 40A
Peak current: 60A
Maximum Battery Voltage: 6S
Compatible with FBUS/S.Port protocol