About NIWA

This Weather Transmitter is a compact and lightweight multi-sensor instrument that measures the six most essential weather parameters and has no moving parts.

This miniature transmitter measures humidity from 0 to 100% and temperature from -40 to +60 degC. It uses little power, and you can remove its sensor to simplify calibration.

For WMO-standard accuracy and stability we use HMP155 probes to measure Relative Humidity and air temperature in our Electronic Weather Stations.