Product type: fs-ibc01 compatible devices: the receivers with i-bus2 protocol (such as ftr8b, ftr12b, inr6-hs and other flysky afhds 3 enhanced version receivers). Compatible models: cars, boats, airplanes, etc. Protocol: i-bus2 voltage measurement range: 0~100v current measurement range : 0. 5~400a (100~200a within 15 seconds, >200a within 5 seconds) input power: 3. 5 ? 9v /dc measurement capacity: 0mah~32767mah voltage measurement error: +/- 0. 1v current measurement error: 0. 5~100a: <0. 5a?100~200a: <1a?200~400a:<1% online update: no weight: 42g temperature range: -20? ~ + 85? Humidity range: 20% ~ 95% certifications: ce, fcc (fs-ibc01)