Features: 1. RV power generation, aquarium oxygen power generation system, household AC solar power system. 2. Environment-friendly and pollution-free, it realizes the energy conversion from solar power to electric power. 3. Wide range of applications, it can be used in lots of place such as for car, small household appliances, ect. 4. A solar panel is a device that converts solar radiation directly or indirectly into electrical energy by absorbing sunlight.  Compared with ordinary batteries and rechargeable batteries, solar panels are more energy-saving and environmentally friendly. Specifications: Solar Panel. Solar panel Material: A-level polycrystalline silicon solar panel. Detection Rate: IP65. Panel Size: 420*280mm /16.9*11.26in. Maximum power: 20W. Rated power: 10W. Maximum voltage: 21V. Working voltage: 18V. Current: 0-1000MA. Waterproof rating: IP65. Conversion rate: 19.6-20%. Working temperature: -40℃+85℃. Scope of application: bicycle, mountaineering, hiking, camping, traveling, etc. Nixie Tube Controller. Current: 30A/40A/50A/60A. Voltage: DC 12 /24V Auto Adapted. 1. Build-in industrial micro chip. 2. Big LCD display, adjustable parameter. 3. PWM battery charging. 4. Build-in short-circuit protection, open-circuit protection, reverse protection, over-load protection. 5. Dual MOS Reverse current protection, low heat production. 6. Adjustable controlling parameter of the system. Inverter Product name: DC12V TO AC220V/230v/240v inverter. Output waveform: Modified sine wave. Output power: 3000W. Input DC voltage: 12V (note: the positive and negative poles cannot be reversed and will be damaged). Output AC voltage: 220V 50HZ. Output AC socket Specifications: universal socket. Low voltage alarm: 10V DC±0.5V. Low voltage protection: 9V DC±0.5V. Overvoltage protection: 15.5V. Protection function: overload, short circuit, overheat, reverse polarity, undervoltage/overvoltage. Package included(Battery not included): 1x Solar Panel. 1x Controller. 1x Inverter. 2x Connecting Cable. 1x English Manual.