Main Features: XT30/ XT60 Smoke Stopper ,Every quad drone owner should have one Input Voltage: 7-25V,this smoke stopper can help avoid damage when you power on your 2-6s quad drone for the first time XT30 & XT60 (Input and Output),suit for FPV drone with XT30 or XT60 connector. The LED indicator turns solid green in normal situation, The LED indicator turns off and starts beeping in abnormal situation. Description: XT30/ XT60 Smoke Stopper ,Every quad/drone owner should have one. A smoke stopper can help avoid damage when you power on a mini quad drone for the first time. Sometimes you might have a defective part or a short somewhere, the smoke stopper can limit the current flow and prevent "magic smoke"It saves your electronic components from current surges, and gives you a chance to troubleshoot the failure without having to replace the burnt-out parts. The LED indicator turns solid green in normal situation, The LED indicator turns off and starts beeping in abnormal situation. Specification: Connector : XT30 & XT60 (Input and Output) Hold current 0.7A Trip current 1.2A Input Voltage: 7-25V (2-6S) Note: The Smoke Stopper is just one of many tools that should be in your electrical kit, It will not protect against all wiring errors, and you should always check your work with a multimeter before applying voltage. Material: PC+Metal colour: blue+yellow Package Contents: 1 x protector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.