Salinity Refractometer for Aquarium Fish, Salt Water Testing, Dual Scale Salinity Tester PPT& Specific Gravity Saline Seawater Refractometer Hydrometer with ATC, Made of Copper Not Cheap Aluminum industrial2 |01-99 WIRELESS ID|: Only Achieve

|01-99 WIRELESS ID|: Only Achieve Triggering when the Channels and Wireless IDs of the Master and Slave unit are Set to the Same

This heat sink is used with high-power LED light

XLR male connector has molded strain relief and reinforcing screws to support the weight of a microphone

First class Japanese optical glass with 18-layer Nanometer-coating provides superb anti-reflection

Salinity Refractometer for Aquarium Fish, Salt Water Testing, Dual Scale Salinity Tester PPT& Specific Gravity Saline Seawater Refractometer Hydrometer with ATC, Made of Copper Not Cheap Aluminum industrial2 |01-99 WIRELESS ID|: Only AchieveSalinity Refractometer for Aquarium Fish, Salt Water Testing, Dual Scale Salinity Tester PPT& Specific Gravity Saline Seawater Refractometer Hydrometer with ATC, Made of Copper Not Cheap Aluminum Product Features COPPER DURABLE: Made of Copper not cheap Aluminum, easy to clean and maintain. WIDE APPLICATIONS: Aquariums, Marine Monitoring, Agricultural, Fish Tank Saltwater Measuring, Gardening & Educational Purposes (Biology Projects) etc. Aquarium