... Jiaxing Trading Co., LTDRED-4 ZEXEL electronic controlled in-line fuel injection pump electronic speed governor testerDESCRIPTION:This ... 5%-95%5. Precision : ±0.1%6. 4 Pre-set : 5%, 16.25%, 72.5%, 95%BUTTON ... programme. Before left factory, all the data have pre-set well, don't change it by any ... lamp light, and press arrow ↑ ↓ to choose pre-set rank, and press select button again, indicator lamp ...