5-3
About the display backlight
IP100H has a display backlight. The backlight is conve-
nient for nighttime operation.
One of three states can be set by your IP1000C system
controller.
• OFF: Never lights.
• Auto: Lights for approximately 5 seconds when
pushing any key except [PTT], or when rotat-
ing [PWR/VOL]. (Default)
• ON: Continuously lights while the communication
terminal power is ON.