This is a kilowatt hour (kWh) energy and power meter that communicates on a EIA RS-485 network, measures 1, 2, or 3 phases with voltages from 120 to 138 volts Vac and currents from 5 to 6,000 amps in delta (phase to phase) and wye (phase to neutral) configurations.
This Air Quality Sensor is a full-featured CPU based device which is ideal for the detection of Air Contaminants. In residential and commercial environment, the Figaro Sensor has high sensitivity to VOCs and odorous gases. This unit comes with an LCD display with back lighting for easy viewing.
Note: This item is in the clearance section because it is superseded by a new smaller version which you can see here: https://www.bravocontrols.com/shop/air-quality-sensor/