Sense to Offer $40 Promo Discount on $299 Energy Monitor

Home energy monitor company Sense is running a $40-off promotion Feb. 15-20 on its Sense monitor ($299) that tracks and reports energy usage via mobile app, the company said Tuesday. The device, which installs in a home’s electrical panel, uses waveform energy to measure electrical signatures of individual devices a million times per second, giving homeowners immediate feedback on potential energy drains in their home, the company said. It can also recommend the best time to run high-load appliances such as a washing machine or when to charge an electric car, it said. The code for the deal is WINTER at Amazon.com.