The Trimble® RS400 is a potentiometer-based rotation sensor that measures angle change between two pivoting members. Its primary application is measuring blade rotation used to calculate the cross-slope of a machine blade. The industry-standard J1939 CAN interface provides quick and easy system integration. J1939 CAN Interface of the RS400 into your system. The RS400 is built to deliver reliable, long-lasting performance in the on-machine environment where extremes of temperature, vibration, moisture and dust are the norm.