Product Application: 1. Measure the rpm and kv for BL motors. 2. Measure the voltage of the battery pack.
Specifications: Working Temperature Range: -20℃ to 50℃ Weight ：35g (wires included) Dimension： 29x 63x 5mm Working Voltage Range： 9-25V
Simple operation and the cheapest kv/rpm meter.
Features: 1. Ultra-small size. Practical and portable. 2. RPM, KV, voltage display, convenient to observe the data. 3. Comparing to the mechanical and photoelectric measuring methods, the measuring by "electromotive force" is more exact and easier to use, and no side-effect to the motor. 4. KV display while the BL motor works. 5. Simple connecting: just need to connect one wires of the motor for measuring, no need additional power supply.