Thermo Fisher Scientific Alpha pH 190 (In the process of updating the brand guideline & product image) - Manual (Page 14)

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2. Press the ▲ or ▼ keys and adjust first relay set point. You can
adjust it in 0.01 increments from 0.00 to 14.00 pH (-999 to
1000 mV).
3. Press ENTER to confirm and return to the measurement
mode.
NOTE: Press ▲ and ▼ keys together (ESCAPE) at anytime, to
return to Measurement mode.
Set Point 2 (SP2) adjustment mode
This lets you adjust the pH (or ORP) value in Set Point 2. If this
value is crossed, the set point relay 2 LED will light.
1. Press the SP2/▲ key. The screen will scroll P2.1, SP2, and
then the current set point value.
2. Press the ▲ or ▼ keys and adjust second relay set point. You
can adjust it in 0.01 increments from 0.00 to 14.00 pH (-999 to
1000 mV).
3. Press ENTER to confirm and return to the measurement
mode.
NOTE: Press ▲ and ▼ keys together (ESCAPE) at anytime, to
return to Measurement mode.
NOTE: These modes are only for adjusting relay 1 and/or relay 2
set points values. To set the relays as low or high set points or to
set its hysteresis values, you have to make the adjustments from
the Setup mode as in Section 9.3 and Section 9.4.