Amazon with Meross Direct has the meross Single-Pole Smart Dimmer Switch for Halogen and Incandescent Bulb, Supports Alexa, Google Assistant, SmartThings and Apple HomeKit for $36 - $10 off coupon (check green "Save coupon" box) - $8 off with code XMINPFQA [Exp 4/18] = $18 with free shipping on $25+ or with Prime. Neutral wire required.