... corresponding to the LCD monitor;2. Manual, RF remote, RS232, RS485 control;3. Direct factory price;4. Low noise;5. ... rotation, Pause, Lift-up, Lift-down.2. Remote control3. RS232, RS485 controlYou can control the LCD monitor lifts working as individual ... ×650Lift hole size(mm)420×81N.W22kgControl modesmanual,remote,RS232 RS485 control Audio visual system RS232 RS485 control 19 inch LCD monitor lift