10 units of Vacuum Tubes for solar water heater, evacuated tubes for solar plastic shield for sensors This auction includes: 1 set

This auction includes: 1 set of solar collector of solar hot water heater(tube length: 0

no obstacle in between

Soil Moisture Sensor

In an East West orientation they cantrack the sun all year round

CO2 concentration

10 units of Vacuum Tubes for solar water heater, evacuated tubes for solar plastic shield for sensors This auction includes: 1 setThis listing includes: 10 units of vacuum tubes (or evacuated tube) for solar,high performance. Length of tube: 500mm Application: they can used for the demo solar collector, demo solar water heater, or other DIY solar hot water heating system. Get the energy from the SUN. Remark: the tubes are fragile, we will ship to you via Express. (if tubes broken, we will ship to you again or refund to you, no worries) Description: Just like an automobile