ViewSonic LD135-151 User Manual page 13

Remote Control Receiver Range
The operating range of the remote control is shown here. It has an effective range
of 20 feet (6 meters), 30
the remote control's signal to the receiver.
RS232 USB USB USB HDMI HDMI HDMI AUDIO USB-B LAN
OUT 2 1 OUT STAND-BY INPUT
30°
30°
20 ft
°
degrees left and right. Ensure there is nothing obstructing
BRIGHTNESS
13