The moisture meter can quickly measure the moisture content of the grain. 1. DUAL POWER SUPPLY: Dual photovoltaic switch, rated voltage is 12-400VDC and 90-400V AC, rated current is 50A, with high mechanical and electrical life. 2. APPLICABLE SCOPE: This switch box is suitable for photovoltaic panel network and off-grid system, solar power generation system, photovoltaic board, solar RV, etc. 3. IP65 WATERPROOF: This dual power circuit breaker has an IP65 waterproof rating, suitable for indoor and outdoor use, and can withstand harsh weather conditions. 4. TRANSPARENT COVER: Using solar connectors for faster and safer installation, plug and play and transparent cover for easy control of circuit breaker status. 5. Specification: Item Type: Dual Power Switch Model: DZ47X 63 Material: PA66 Waterproof rating: IP65 Rated Current: 50A Rated Voltage: DC12-400V AC90-400V Icu: 4kA Uimp: 4kV Trigger curve: B (3-5 I/In) Electrical life: 4000 times Mechanical life: 10000 times Norma: IEC60947-2 Operating temperature: -30 ℃ to and70 ℃ List of packages: 1 x box with automatic switch (including upper and lower part) 1 x Electrical Tape 2 x waterproof caps 2 x waterproof connectors 2 x Rubber Rings 2 x waterproof rings 7 screws 4 x Dowels 4 x connection terminals 4 x photovoltaic lines 1. Open the package and remove the product2. Install the support wires and accessories in the electrical box 3. Connect the solar panel to use it