ignition tachometer, digital meter RC accessory with additional automatic detection function for petrol and gas engines

Added automatic detection function Adopt 16C622A microcontroller No battery needed, power supplied directly from the ignition Ftures: Added automatic detection function. Adopt 16C622A microcontroller. No battery needed, power supplied directly from the ignition. Black-negative, Red-Positive and White-Signal. Using high-brightness LED digital tube. Suitable for DLE series / MT gasoline engines, etc. Specification: Condition: 100 Brand New Item Type: RC Accessory Material: PCB Color: Black Size: Approx. 54 x 20 x 15mm / 2.13 x 0.79 x 0.59inch Display Screen Size: Approx. 32 x 15mm / 1.26 x 0.59inch Weight: Approx. 22g Input Voltage Range: 3-12V Current Consumption: 25mA-60mA Maximum RPM: 30000RPM Actual RPMequalDisplay Digital * 10 Package list: 1 x Ignition Tachometer 1 x Manual Note: Plse note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.