Single Wireless Digital Pressure Temperature Gauge Multiple Refrigerants +/-0.5-1-2 Percent Wireless Connection to Your Smart Device So You Can Test the System Without Losing Refrigerant Free Downloadable ManTooth RSA App Wirelessly Calculates and Displays the System s Actual Pressures Color Format on your iPhone(R) iPad(R) or Android(TM) deviceM Bluetooth Range up to 400 Degrees