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The RHT-Air is a wireless transmitter that when coupled with the AirGate-Modbus provides an excellent solution for wireless monitoring of temperature and relative humidity variables. Together, they combine the  ease of configuration and data acquisition operation of the RHT-RS485-LCD, which connects directly to a Modbus RTU bus, with the versatility of the wire-free installation of LogBox-RHT. Through the IEEE 802.15.4 wireless interface, multiple RHT-Airs may talk to one or more AirGates, providing this way USB and RS485 communication paths to the main application.
The RHT-Air uses high accurate sensors for measurements of the temperature, relative humidity and dew point. It also provides a LCD display for local viewing of the measurements while allowing reconfiguration of the transmitter parameters without having to run the configuration software on the computer.

Operating limits:
• Sensor and probe: -20 to 80 °C, 0 to100 % RH
Electronic circuit: 0 to+65 °C, 0 to 95 % RH
Power supply
Internal battery:  Lithium ½ AA de 3,6 V
Battery autonomy: typically1 ano
External supply (optional): 10 to 35 Vdc, 70 mA max
Wireless Protocol:  IEEE 802.15.4
Configurator software DigiConfig for Windows®
Accuracy: ±3 % RH from 20 to 80 % RH (at 25 °C) and   ±1 °C for temperature
ABS housing with IP65 protection, for wall mounting   (WM model). Nylon probe
Probe extension (DM model): Stainless steel 150 or      250 mm of length
Dimensions: 70 x 60 x 35 mm
Anatel certification
Typical wireless range:
In open field: 500 meters

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