Yes, it can side projecting.
To realize the side projection, the projector needs to support the trapezoidal correction in the left and right directions. Dangbei C2 supports quadrate trapezoidal correction, manual trapezoidal correction in horizontal direction and automatic trapezoidal correction in vertical direction. When Dangbei C2 is projected on the side, the trapezoidal picture can be corrected to square by means of horizontal manual correction. Dangbei C2 is corrected in the vertical and horizontal directions, the correction range is plus or minus 40 degrees