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- Press the 'SEL. NEXT' (down arrow) and 'SEL. PREV' (up arrow) buttons to select the channel to operate on. The 'Select' column of LEDs will show the current channel selected by illuminating the associated LED.
- Press the 'MODE' button to change the selected channel between Normal to Cutout, Cutout to Normal, or from Standby to Cutout.
- Press the 'ACK' key for less then 5 seconds to acknowledge the condition on the currently selected channel. If the channel is in alarm, the mode of the channel will transition to Standby when acknowledged.
- Press the 'ACK' key for more then 5 seconds to acknowledge the condition on all channels.
- Press the 'TEST' button to perform a lamp test.
