Ten angle grinder speed controllers for electronic frequency controller and speed controller, multifunctionality, safety and functionality. Thanks to the stepless speed control function, it can be used not only in angle grinders,marble machines, exhaust fans, electric heaters and other power tools and household appliances for speed control,but you can proceed to measurethe measurement of electric heaters,motor fans and other power regulation and regulation equipment,and even regulation, temperature and other parameters,its application is wider. It has functionality compatibility, limited mechanism, required adjustment and humanized design, which is very useful and practical speed controller. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. （Multi-functional stepless speed control）: thanks to the stepless speed control function, it can be used not only in angle grinders,marble machines, exhaust fans, electric heaters and other power tools and household appliances for speed control,but you can go to the control module and electric heaters,motor fans and other power regulation devices,and even regulations, temperatures and other parameters, its application is wider. （Safety design）: The housing made of ABS flame retardant materials provides temperature, compression and high insulation properties to ensure the safety of the use process. With load and short circuit protection, use and short circuit protection, independent of operation control, and output, discontinuation of use and protection, effectively excluding damage to devices that are the result or short circuit. （ Precise operation adjustment and ignition display）: actuation in a very potentiometer adjustment system, which causes the adjustment to start and start; Available in a very accessible voltmeter, which is displayed during use, so that the user can be equipped with working devices. （High power knob and 4000W） power: The high power 4000W design can be run in different types of high power equipment, using the potenteter regulator through the regulator to achieve the control power, energy saved and energy preserved, simple and practical operation. （Humanized details）: Compact model, easy to carry, directly with hook buckle, which makes it easy to use the angle grinder when the operator is connected to the toolkit or toolbar to operate, passing humanized control. Warm markings: You cannot find products inside control plates and electronic bandwidths, bedside fans, miniature fans, small ceiling fans, LED energy-saving lamps, microwave ovens, induction cookers, microwave ovens, washing machines, rice heating devices, aquarium pumps, brushless synchronous motors go further. Technical data: Name: Electronic Voltage Regulator Material: ABS Maximum power: 4000 W (2000 W power) Maximum current: 10A Product Size: 120 * 65 * 55 mm / 4,72 * 2,56 * 2,17 inch packaging Size: 145 * 120 * 115 mm / 5,71 * 4,72 * 4,53 inch Package Weight: 420 g / 0,93 lb List of things to pack: 1 * electronic electric regulator