Static Pressure. System External Static Pressure. Pressure Differential. Indoor vs. Outdoor Pressure. Gas Pressure Test. Pressure range: ±75 inWC. Operational temperature range: -40°F to +185°F (-40°C to +85°C).
I love the meter. It's inconspicuous and looks professional when I'm taking pressure readings but when using it for long tests (over 10 minutes) it bugs out dropping readings or going from negative pressure to positive. I'm using an iPhone 6 so I'm thinking it's the meter not my phone. I'd still roomed it but hope ABM works on a fix.