difference between dry contact mode output and open collector output
"Dry contact input" means it just needs to be shorted together to activate (intended to be used with a dry contact like a switch/thermostat/relay/open collector, etc).
"Open collector" means a transistor with collector connected to the output - it can only be used to pull something to ground (i.e short output wire to ground wire)
Since that is all we need to do here, then it should work (as long as the ground wire of the open collector is connected to the negative side of the input)