FrSky 40A Smart Port Current Ampere Sensor FAS-40 Sport Brand name: FrSky . Item name: Current Ampere Sensor with smart port . Dimension: 61 x 17 x 13mm . Weight: 17g . Measurement range: 0~40A . Maximum safe current: 40A . Current consumption: 25mA . 5V . Maximum battery voltage: 6S . Features: Can measure Current (A), Power Consumption (mAH) and Power (W) when connected between a Battery and ESC. . Only works with the Smart port receivers,such as X8R,X6R,X4R,more. . Come standard with XT60 connectors. . Package Included: 1 x FrSky Current Ampere Sensor 40A With Smart Port