wrote:
cupra wrote:
What are you planning to use it for?

A process signal in the range 0-10VDC is input to the controller. The
controller compares the input signal against a high setpoint and a low
setpoint. If the input is below the low setpoint, a relay output
energises. If the input is between the low and high setpoint, the relay
is de-energised. If the input is greater than the high setpoint, the
relay energises.

The response of the relay should be time delayed (between 0 and 5
seconds) to prevent temporary changes in the input affecting the
output.

I would have to program the controller so that the setpoints and time
delay could be adjusted from the front panel using a LCD display.

The power supply needs to be 24VDC.
You can get dedicated setpoint/temperature controllers (Omron/Redlion
to name but two) that do this for you without all the faff.