After the hub update to 1.1.4 all of my Monoprice plugs quit working. I'd been using a modified Smartthings driver that has been working perfect. Now the HT ZooZ Power Switch driver appears to be taking care of these Monoprice plugs and all of their capabilities.
The ZooZ Power Switch driver appears to be working for these 3 MonoPrice plugs.
Monoprice Z-Wave Plus Wall Socket Plug-in Receptacle with 2 USB and 1 AC Port up to 2.4A item # 15654
Monoprice Z-Wave Plugin On/Off, NO LOGO (Works with Alexa & Google Home with Hub) item # 11995
Monoprice Z-Wave Plus Smart Plug and Repeater with 2 USB Ports (Works with Alexa & Google Home with Hub) item # 27481