Don’t know, we retuned ours as it was full of problems and non-existent tech support. I would stay away from this company made in China. Ended up getting a great a unit from Davis Instruments, made in California. (Purchased from Amazon) they have live telephone support and they could answer your question or recommend the best product for your boating needs.

Best Sellers Rank	#420,866 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #126 in Wind Speed Gauges
Brand	ECOWITT
Connectivity Technology	Wi-Fi, 915 MHz
Customer Reviews	4.4 out of 5 stars 122 Reviews
Material	Stainless Steel
Power Source	Battery Powered, Solar Powered
Special Feature	Solar Powered, Wireless Transmission, Multi-Data Measurement
Specific Uses For Product	Wind Direction, Wind Speed

ECOWITT

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