How accurate is the TV2?

Accuracy is a property of the sensor rather than the display. Digital and thermistor temperature sensors are ±0.3 °C, humidity sensors are ±3.0 % RH, and the differential pressure sensor is ±0.002 in wg.

Every sensor converts its reading to a digital value before sending it to the display, so the length of the cable does not degrade the measurement. Sensors can sit up to about 200 feet from the monitor and still read accurately.

On screen the TV2 shows 0.1 degree and 1 % RH resolution. Downloaded data carries more decimal places for analysis. Each sensor holds its own three point calibration table, and NIST-traceable certificates are available.