G.T.POWER RC Micro Digital Tachometer LCD for 2-9 Blade

G.T.POWER RC Micro Digital Tachometer LCD for 2-9 Blade Description: Weight: 39g Dimension: 90x54x16mm Manufacturers ID: GTPRPM Working Way: photo electricity Max.Indication: 99999 Display: LED Blade: 2-9 Auto Turn Off: no signal for 1min Backlight Color: blue Battery: 220mah replaceable lithium battery Function:To measure RPM of a spinning propeller,2-9 blades ones,memorize peak RPM datas. Feature: 1.Compact and extremely portable 2.220 mah removable lithium button battery included 3.Sharp backlit LCD screen. Viewable even under poor light condition 4.Automatically shutoff when signals are not detected within one minute Package Included: 1 x G.T.POWER RC Micro Digital Tachometer LCD for 2-9 Blade