Standard Volt Free Connection set will allow for monitoring of alarms through
analogue communication between your chiller and application, allowing flow,
temperature, level and all-OK VCFs to be communicated across 5 wires of D-sub
9pin, able to cope with 230Vac@5A.
In cases of high flow, temperature within detectable range, or high level,
the circuit will close, causing the signal to be sent.