After our technical team’s efforts, we are proud to announce the successful development of the master controllers Model: RT300 for Crane. RT300 Series Industrial Joysticks are mainly used in the occasion of the harbor, docks, coal, or open-air operations, AC 50Hz, 60Hz voltage 380V and 220V DC to control the crane transport operators as well as the similar electrical control equipment, such as motor starting, speed control and brake.