XT30/ XT60 Smoke Stopper , quad/drone owner should have one. A smoke stopper can help avoid damage when you 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 and prevent " 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. Material: Composite Color as shown Main Features: XT30/ XT60 Smoke Stopper , quad drone owner should have one Input Voltage: 7-25V,this smoke stopper can help avoid damage when you 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. Specification: Size 52 x 31 x 11mm Connector : XT30 & XT60 (Input and Output) Hold current 0.7A Trip current 1.2A Input Voltage: 7-25V (2-6S) Package Contents: 1x Short-circuit Protection Plug Note: The Smoke Stopper is just one of many should be in your electrical kit, It will not against all wiring errors, and you should always check your work with a multimeter before applying voltage. Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.