Subscribe to our newsletter

RH200W: Multi-Channel Wireless Hygro-Thermometer

Connect up to 8 Wireless Transmitters to Remotely Measure Indoor Temperature/Humidity

View Datasheet > RH200W


Extech’s Multi-Channel Hygro-Thermometer, with easy-to-read 1.3″ (33mm) digits, displays indoor Temperature and Humidity levels. You can connect up to 8 wireless transmitters to remotely measure Temperature/Humidity levels up to 98ft (30m) away. The LCD is designed with an auto-night light and it displays icons that indicate indoor comfort levels and trending arrows that show the increase, decrease or constant readings. It also records Min/Max for the duration of each measurement session. Ideal for multi-room environmental monitoring for restaurants, manufacturing facilities, offices, homes, greenhouses, and storage/archive buildings.

Additional information

Temperature - Indoor Base Station

23 to 122°F (-5 to 50°C)

Temperature - Remote Transmitter (RH200W-T)

-40°F to 140°F (-40°C to 60°C)

Relative Humidity

1 to 99%RH

Wireless Sensor Signal


Number of Remote Transmitters

Base Station can connect up to 8 Transmitters (RH200W-T)


Base: 5.1 x 4.4 x 1.1" (130 x 112 x 27.5mm); Transmitter: 4.5 x 2.4 x 1.6" (113 x 61 x 39.5mm)


Base: 10.4oz (295g); Transmitter: 4.8oz (136g)

Please leave your details below so we can get in touch with you.

Contact Info


Hi there!

Click one of our representatives below to chat on WhatsApp, send us an email to or give us a call on +27 (0) 11 794 7834