I bought a Xiaomi Mijia Bluetooth Temperature Humidity Sensor at Tmall.com. The price is RMB 67.90, converting to CAD$13.56. No tax added. It has a LCD screen. Powered by one AAA battery. Let’s look at the specification. Product model: LYWSDCGQ/01ZM CMIIT ID: 2017DP4004 The product body weight: 36 g The base weight: 7 g The screen