Package Dimensions:11 x 9 x 2 cm Features: 1. Safety protection, no matter where the throttle is, the motor will not rotate when connected to the battery. 2. Throttle calibration function, the throttle range can be calibrated to be compatible with different transmitters. 3. Support a variety of program methods, emitting rod, LED program card. ESC is very easy to operate from home or on the fly. 4. Compatible with lithium and nickel metal hydride batteries. 5. Full protection, low pressure cut off protection/overheat protection/throttle signal loss protection. Specification: Item Type: Brushless ESC Material: Electronic Components Color: As Pictures Shown Weight: Approx. 34g/1.2oz Continuous Current: 40A Maximum Current: 55A Plug: XT60 BEC: Yes BEC Output: 3A/5V Applicable Battery: 2-4S Maximum Speed: 210,000 rpm for 2-pole Motor, 7000 rpm for 6-pole Motor, and 35,000 rpm for 12-pole Motor Application: RC Remote-controlled UAV, Helicopter, FPV, Etc PackageList: 1 xESC [Comprehensive Safety Protection] The RC Speed Controller is equipped with advanced safety features to prevent accidents and damage. The motor will not rotate when connected to the battery, no matter where the throttle is. The controller also comes with low pressure cut off protection, overheat protection, and throttle signal loss protection for full protection [User Friendly Design] The RC Speed Controller is compatible with a variety of program methods, including emitting rod and LED program card, allowing you to operate it easily from home or on the fly. It is also compatible with both lithium and nickel metal hydride batteries for added versatility [Throttle Calibration Function] This RC Brushless Speed Controller also has throttle calibration function, this feature allows you to calibrate the throttle range to be compatible with different transmitters, giving you more control and precision as you operate your RC vehicle [High Performance] The Brushless Motor Speed Controller Module can handle continuous current up to 40A and short time current up to 55A for up to 10 seconds. It also features a high maximum speed of 210,000 RPM for 2 pole motors, 7000 RPM for 6 pole motors, and 35,000 RPM for 12 pole motors. The timing can be changed to be suitable for different brushless motors [Durable and Reliable] The RC Speed Controller is made of high quality materials and is designed to provide lasting performance. Its linear regulator mode linear mode BEC output produces 5V at 3A, making it compatible with different battery types. The controller also comes with full protection features, including low voltage cutoff protection, overheat protection, and throttle signal loss protection for added durability and reliability See more product details [Comprehensive Safety Protection] The RC Speed Controller is equipped with advanced safety features to prevent accidents and damage. The motor will not rotate when connected to the battery, no matter where the throttle is. The controller also comes with low pressure cut off protection, overheat protection, and throttle signal loss protection for full protection [User Friendly Design] The RC Speed Controller is compatible with a variety of program methods, including emitting rod and LED program card, allowing you to operate it easily from home or on the fly. It is also compatible with both lithium and nickel metal hydride batteries for added versatility [Throttle Calibration Function] This RC Brushless Speed Controller also has throttle calibration function, this feature allows you to calibrate the throttle range to be compatible with different transmitters, giving you more control and precision as you operate your RC vehicle [High Performance] The Brushless Motor Speed Controller Module can handle continuous current up to 40A and short time current up to 55A for up to 10 seconds. It also features a high maximum speed of 210,000 RPM for 2 pole motors, 7000 RPM for 6 pole motors, and 35,000 RPM for 12 pole motors. The timing can be changed to be suitable for different brushless motors [Durable and Reliable] The RC Speed Controller is made of high quality materials and is designed to provide lasting performance. Its linear regulator mode linear mode BEC output produces 5V at 3A, making it compatible with different battery types. The controller also comes with full protection features, including low voltage cutoff protection, overheat protection, and throttle signal loss protection for added durability and reliability