This product is a professional engine speed tester which is durable easy to operate, samall volume and light weight. It uses intelligent MCU to control and can work very steadily. It is an essential tool for model lovers. It applies to Rcexl series ignition, in the market the engines which use Rcexl ignition are DLE series, MT gas engine and so on.Features:Use PIC 16F628a microcontrollersSmall Vokume, convenient to CarryDo not need batteries, from itselfStandard FUTABA plugUse 4 digital tube to monitor the engine's speedMini tachometer indicates up to 30,000RPMIncreased self test featureSpecification:Brand name: G.T.Weight: 17gDimension: 54 * 20 * 15mmWorking voltage: 3 - 12VWorking current: 25 - 60mAPackage Information:Package size: 9 * 6.5 * 3cm / 3.6 * 2.6 * 1.2inPackage weight: 52g / 1.8ozBrand gift box packagePackage List:1 * G.T. RC Ignition Mini TachometerFeatures:Use PIC 16F628a microcontrollersSmall Vokume, convenient to CarryDo not need batteries, from itselfStandard FUTABA plugUse 4 digital tube to monitor the engine's speedMini tachometer indicates up to 30,000RPMIncreased self test featureSpecification:Brand name: G.T.Weight: 17gDimension: 54 * 20 * 15mmWorking voltage: 3 - 12VWorking current: 25 - 60mAPackage Information:Package size: 9 * 6.5 * 3cm / 3.6 * 2.6 * 1.2inPackage weight: 52g / 1.8ozBrand gift box packagePackage List:1 * G.T. RC Ignition Mini Tachometer a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a