1. FD-WM (Wattmeter) is a compact tester, which can be used on the model to check the real-time voltage, current, power and temperature.

2. Besides, it can also record the extreme value of each item.

3. Alarm settings will add fun to model plane competition.

4. Advantages: pretty favorable price, light (25.6g), low power consumption, accurate testing,high quality, easy operation, etc..