* One-hand operation type (HH Type) is a new reliable wireless controller with reasonable price. * It is used for simple machines such as winch with simple functions, hoist, conveyer, crane trolley, vibrator, and pump. * It has high reliability even in the environment with much moisture and dust due to solid design with the specification applied for big-sized wireless remote control. * One-hand operation type is designed for human life in priority without malfunction due to any interference. * One-hand operation type is an optimal unit used for safe and simple working environment, with maximal 14 functions.