Dell Small Business offers the Canary All-In-One Home Security System in Black or White, bundled with a $50 Dell Gift Card for $149 with free shipping. Assuming you use the credit, that's $50 under last week's mention, a low by $48, and the best price we've seen. It features day and night audio, siren, 802.11n wireless, and temperature, humidity, air quality, ambient light, and motion sensors.