Petrol / Gas Engine Mini Tachometer - Kings Lynn Model Shop POWER Weight: 17g Dimension: 54 * 20 * 15mm Working voltage: 3 - 12V Working current: 25 - 60mA Package Information: Package size: 9 * 6., 5 * 3cm / 3., 6 * 2., 6 * 1., 2in Package weight: 52g / 1., 8oz Brand gift box package Package List: 1 * G., T. POWER RC Ignition Mini Tachometer It applies to Rcexl series ignition, in the market the engines which use Rcexl ignition are DLE series, MT gas engine and so on. G.T.Power Tachometer No Battery Needed Model Aircraft Tachometer GoolRC G.T.Power Mini Digital Tachometer For Rc Gas Engines H 818550 GoolRC GT-Power Mini Tachometer For Gas Engines The product has been added to the standard of products of the seller's standards I recommend. Faster delivery, good quality Use PIC 16F628a microcontrollers It uses intelligent MCU to control and can work very steadily. FT08 RC 150A Hight Precision Watt Meter and Power Analyzer w/ Backlight LCD (150A Watt Use 4 digital tube to monitor the engine's speed