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. 2005;2005:440–444.

Table 1.

Design for use of LEDs to convey alert status.

Lights Blink Rate (Hz) Indication
Red LED 0.5 Immediate
Yellow LED 0.5 Delayed
Green LED 0.5 Minor
Blue LED 0.5 Deceased
White 5 Medical alert
No lights -- Fault
White 0.1 Low Battery
All 0.5 No RF Link
White+Blue 0.1 Malfunction
Triage
White
0.1
0.5
Hazardous area warning
Triage
White
0.5
0.1
Decon