This product is designed to meet the needs of both aircraft model enthusiasts and professional players. The voltage abnormal protection feature ensures the stability and safety of aircraft model flights by protecting the ESC from voltage . The model tester allows users to independently test and adjust servo performance, providing a convenient solution for fine-tuning aircraft model controls. Features -Color:Multi -Material:PP,Electric Components -Size(Detector):4.50X3.10X2.00cm/1.77X1.22X0.79in -Size(Electric Component Bag):30.00X2.50X1.00cm/11.79X0.98X0.39in -The Aircraft Model Voltage Tester is a must-have tool for aircraft model enthusiasts and professional players. -It features voltage abnormal protection, ensuring that the aircraft model ESC is not damaged by voltage . -It serves as a DIY servo intelligent tester, allowing users to easily test and adjust servo performance. -Manufactured with PP and electric components material, you can use this tool with ease and convenience. -Stable and reusable, this tester can be used to test voltage for some diy crafts and model. Package list: 1 x Voltage Tester