Ambient Weather WH2C Wireless Thermo-Hygrometer

Amazon.com Price: $7,83 (as of 04/12/2021 14:57 PST- Details) & FREE Shipping.

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Compatible with the Ambient Weather WS-0101, WS-1171, WS-1172, and WS-1173 weather stations.
The WS-0100 and WS-0101 supports up to three remote channels.