... power failure, then push the rail up by hand directly.
12)Bump-proof: Rails shorter than 4 meters have this function ... RS485 electrical standard, distance of communication ≤1200mType of rail:
Straight /Elliptic /Folding
arm Dimension:330(L)*270(W)*1085(H) mm Model ... Name ModelArm Type Length of
Arm LRange of matched speedAnti-smashing function RemarksJSDZ0202 JSDZ0202Straight Arm4m