Electric brake controls are designed to apply the brakes of the vehicle's towed trailer. A signal is sent to the trailer's brake magnet or actuator when you apply the tow vehicle's brake pedal.The more power / voltage applied to the electromagnets, the greater the braking force. There are three basic types of brake controls on the market today which are a timed style, inertia style, and proportional. signal is sent to the trailer's brake magnet or actuator when you apply the tow vehicle's brake pedal. The more power / voltage applied to the electromagnets, the greater the braking force.
Side effects of the vaccine. You can't get mumps from the MMR vaccine, and most people experience no side effects from the vaccine. A few may experience a mild fever or rash, and some people (mostly adults) have achy joints afterward for a short time.Less than one out of 1 million doses causes a serious allergic reaction.he mumps vaccine is usually given as a combined measles-mumps-rubella (MMR) inoculation, which contains the safest and most effective form of each vaccine.
Top of Page. Measles can be prevented with the MMR (measles, mumps, and rubella) vaccine. One dose of MMR vaccine is about 93% effective at preventing measles if exposed to the virus, and two doses are about 97% effective.In the United States, widespread use of measles vaccine has led to a greater than 99% reduction in measles cases compared with the pre-vaccine era.ne dose of MMR vaccine is about 93% effective at preventing measles if exposed to the virus, and two doses are about 97% effective. In the United States, widespread use of measles vaccine has led to a greater than 99% reduction in measles cases compared with the pre-vaccine era.