Amazon.com Inc. has agreed to acquire Eero, a builder of WiFi-networking tools, in another deal aimed at bolstering the retail and technology giant\u2019s home devices business. Eero, based in San Francisco, makes gadgets that extend WiFi coverage throughout a home using local networking, known as mesh technology, that removes hiccups in broadcasting internet signals. The companies didn\u2019t disclose the purchase price Monday when they announced the acquisition. Eero has raised $148 million in equity and debt, according to PitchBook Data Inc. Also read|\u00a0New WhatsApp features will change how you interact with friends Amazon, builder of the hit Echo smart speaker line, is behind a growing range of home electronics, from Fire TV streaming sticks to a voice-controlled microwave. Last year, the company bought Ring, a builder of video doorbells and home security gear. Reddit has an outspoken community that has used the company\u2019s own website to protest against its actions in the past. The site has long been banned in China, according to researcher GreatFire.org. The free speech campaign by Reddit users may ensure that remains the case for some time.