The D-Link DSP-W118 Wi-Fi Smart Outlet is significantly smaller than their older model, coming in at about 2.5" x 1.5" x 1 3/8", and is more or less the same size and format as other smart outlets on the market whether they are Wi-Fi, Zigbee, or Z-Wave. This outlet is designed to be controlled primarily by the D-Link mydlink app. It is also compatible with Google Assistant, Alexa, and IFTTT.
