Ultrasonic humidifier help

[shenery]

I'm trying to control an ultrasonic humidifier through a sonoff WiFi relay. My problem is that I have to press a button on the humidifier to turn it on. I have disconnected the switch and isolated 2 wires that have to be touched together and then released to turn on the humidifier. The humidifier is 24v DC. I was thinking of using a relay with timing pulse to send the on off to the switch to turn the humidifier on.
Does anyone have any ideas to solve this problem of mines?

Kind regards
Steven