Thermo Fisher Scientific Alpha pH 2000 - Manual (Page 31)

the relay for the number of seconds (0 to 1999 seconds) you select. Press
the ENT key to confirm your setting.
Note: You can set a time delay for each relay, which stops the relay
from switching on the moment the set point is exceeded. This controller
lets you set a 0 to 1999 second time delay before your relay activates.
6. Setting the off-delay time lag: press the
▲ or ▼ key to enter the off-
delay time for set point 1 (set point 2). Your controller will delay
deactivation of the relay for the number of seconds (0 to 1999) you select.
Press the ENT key to confirm your setting.
Note: You can set a time delay for each relay, which stops the relay
from switching off the moment the value reaches the set point and
hysteresis. This controller lets you set a 0 to 1999 second time delay
before your relay deactivates.
Continue with Setup mode procedures, or return to Measurement mode by
pressing the
▲ and ▼ keys simultaneously (escape).