Particle, VOC, Humidity, and Temperature Sensor - SEN54 Category_Sensors/Gyroscopes You can even pick up

You can even pick up a sniffer edition of the board that comes pre-flashed with special firmware that turns your BLEFriend into a low cost Bluetooth Low Energy sniffer

FTDI Friend (great for any OS)

Turn on or off individual pixels

It has the ultra-low power usage of eInk and the fast-refresh rates of an LCD

Particle, VOC, Humidity, and Temperature Sensor - SEN54 Category_Sensors/Gyroscopes You can even pick upThe SEN54 sensor module from Sensirion combines the measurement of particulate matter, VOC, humidity, and temperature in a single package. The SEN54 sensors provide fully calibrated outputs with a digital interface, a strong lifetime under 24 h day operation, and a compact form factor. The combination of all measurement parameters in a single device allows users to reduce design and integration efforts, shorten development times and simplify supply