Accessories Temperature Sensor for ST-EW-1 & ST-EW-2 Code: ST-ET-1 Price: $25.00 Quantity in Basket: none   Temp. & Humidity Sensor for ST-EW-3 Code: ST-ET-2 Price: $35.00 Quantity in Basket: none   UV Sensor for ST-EW-3 Code: ST-ET-3 Price: $80.00 Quantity in Basket: none   Air Quality Sensor for ST-EW-3 Code: ST-ET-4 Price: $89.00 Quantity in Basket: none   External Transducer Set for ST-SM-5 Code: ST-CK-5 Price: $49.00 Quantity in Basket: none   SKYWATCH Rail Mount Code: ST-AP-15 Price: $23.00 Quantity in Basket: none   SKYWATCH Backstay Mount Code: ST-AP-16 Price: $23.00 Quantity in Basket: none   Windtunnel for ST-SM-18 & ST-SM-19 Code: ST-SM-WT Price: $35.00 Quantity in Basket: none   Carrying Case (All Windmeters) Code: ST-AP-22 Price: $15.00 Quantity in Basket: none   SKYMATE Impeller for ST-SM-18, ST-SM-19 & ST-SM-28 Code: ST-AP-28 Price: $25.00 Quantity in Basket: none

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