Product type: fs-ibs01 • compatible devices: supports receivers that comply with i-bus2 protocol series (such as ftr8b, ftr12b, inr6-hs and other flysky afhds 3 enhanced receivers) • compatible models: cars, boats, airplanes, etc. • protocol: i-bus2 • measurement accuracy: 10rpm • measurement range : 360 ~ 300000rpm • input power: 3. 5 ? 9v /dc • working current: 20ma?5 v? • online update: no • water proof: ppx6 • dimensions: 155mm?length ? • weight: 4. 0g • temperature range: -20? ~ + 85? • humidity range: 20% ~ 95% • certifications: ce, fcc (fs-ibs01)