Maretron IRHT-01 Indoor Humidity/Temperature Sensor [IRHT-01]Indoor Humidity Temperature Sensor The IRHT 01 is used in conjunction with Maretron's Current Loop Monitor (CLM100), which allows indoor humidity and temperature to be broadcast over an NMEA 2000 network where it can be monitored from any compatible NMEA 2000 display. When used together with a Maretron displays, alerts can be set so the user can be informed of abnormal or detrimental conditions. And when not onboard the vessel, users can be notified