My dryer has an annoying buzzer that’s triggered by a 2 second 120VAC pulse. I wanted to create an alert that would send a message to the SmartThings app when the device shut down. It turned out to be a breeze with the DWZWAVE2.5-ECO and this relay:
URBEST HH52P DYF08A Plastic Coil DPDT Black Clear Blue110/120V AC 8 Terminals Electromagnetic Relay w Base - Available for $7.99 from Amazon.
Connecting the buzzer power to the coil of the relay opens the connection to the green screw terminals on the sensor, sending a programmable alert to the app.