The ABM-200 airflow & environmental meter has all of the features of the extremely popular abm-100 Plus it is Wireless and also has temperature, humidity, and pressure sensors. These additional sensors give the meter the ability to accurately measure and record. The Wireless ABM-200 can be attached to our exp-64 64 inch aluminum extension pole (sold separately) to take readings without having to go up a ladder. The ABM-200 connects seamlessly and immediately to smartphones and tablets utilizing Bluetooth SMART technology. Bluetooth SMART (also known as Bluetooth le/low energy) connects over 20 times faster than traditional Bluetooth devices without a complicated pairing process and uses a fraction of the power for long battery life. made in United States. Manufactured by CPS products, Inc.