@twistedfab13 said in Turn off Z-probe when printing?:
Its a capacitive sensor probe. Sorry, the clicking is the relay.
No need to use a relay, see https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_NPN_output_normally_open_inductive_or_capacitive_sensor or https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_PNP_output_normally_open_inductive_or_capacitive_sensor depending on which type you have.