TESTO 6681 Instruction Manual page 121

Field Explanation
MAX If switched to ON (NO contact) or OFF (NC contact)
monitoring above the limit value; in the event of a subsequent
undershooting of limit value minus hysteresis, it is
switched to OFF (NO contact) or ON (NC contact).
The graphic display in the centre of the screen refers
to the relay wiring as a NO contact (ON).
Hysteresis To avoid switching cycles.
Channel Selection of the channel that is to be monitored.
Values for the limits of the unit selected in Unit/analog
Limit value
output; 1 decimal place.
When changing the phys. unit, the relay limit values are
set to the default values.
P2A software
- 3.3 Using the software 121