Datasheet

Dec

Null

Wait 300ms

Command syntax

Alarm,en,1

Alarm,5.5

Alarm,tol,1

Example Response

Alarm,?

Alarm

Alarm,n

Alarm,en,[1,0]

Alarm,tol,n

Alarm,?

enable / disable alarm

sets alarm

sets alarm tolerance (0 – 60)

alarm set?

Wait 300ms

Dec

NullASCII

?, a l a rm,5.50,1.0 0,1

if all are enabled

Dec

Null

Wait 300ms

Enable alarm

Dec

Null

Wait 300ms

O2 level must fall one percentage point

below set point for alarm to reset.

The alarm pin will = 1 when O2 levels are > alarm set point.

Alarm tolerance sets how far below the set point O2 levels

need to drop before the pin will = 0 again.

300ms

processing delay

Alarm

(5.5%)

Alarm

Alarm on Alarm off

(Alarm set point - tolerance)

(5.5% - 1%)

4.5%

Tolerence

(1%)