Features 1、Water and Dust Resistant: The brushless RC 45A ESC is ideal for all weather racing, just remember to remove the cooling fan before use in water and dry it promptly to prevent rusty on connectors. 2、External Programming Port: Effortlessly connect to a program card for convenient access to fine tune and customize ESC settings with ease and accuracy. 3、Multiple Safety: The ESC features low voltage cutoff, overheating safety, throttle sign loss safety, and motor lock safety for added safety and durability. 4、Excellent Performance: The ESC features adjustable proportional braking, 4 level maximum braking force adjustment, 8 level drag brake force adjustment, and 9 step acceleration adjustment cater to various vehicle types and tracks. 5、Versatile Application: Ideal for 1/10 short course trucks, trucks, the brushless ESC has a built in switch mode BEC with a maximum output of 3A at 5.85V, ensuring compatibility with various servo systems. Specification Item Type: Car Model Brushless ESC Material: Aluminum Alloy Continuous Current: Fwd 45A, Backward 45A Maximum Current: Fwd 135A, Backward 135A Resistant: 0.0012Ω Vehicle Type: 1:10 On Road, Off Road, for Buggy, for truck Battery: 4-9 cell NiMH, 2-3S Li Motor Limit: For 2S Li or 6 cell NiMH: On Road: Up to 3650 size or smaller motor Kv <6000 Off road vehicle: Small motor of 3656 yards or KV<4000 For 3S Li or 9 cell NIMH batteries: On the road: 3656 size or smaller engine KV<4000 Suvs: 3656 yards or small motor with KV<3000. BEC Output: 5.85V 3A Cooling Fan: Directly from the battery, no adjustment required Stock fans can be used with 2S and 3S Li Package List 1 x ESC 2 x Stickers 2 x Cable Ties 1 x User Manual