This is a simple thermoelectric cooling system kit that includes a TEC1-12706 Peltier Plate, a Aluminum Heatsink with thermal tape, a 12V Cooling Fan. | They can be used in small cooling applications such as insulated coolers, small wine cooler cabinets and to cool CPUs in computers. | Simple operation, cooling quickly, outstanding effect and good practicability. | The printed side of the TEC device is the cold side. To check the TEC module before assembling the kit without concerns about damaging the device, you can power it off a lower voltage power supply such as 5V, you will feel one side getting colder while the other side gets warmer. | Note: It is important to not fully power this device unless the hot side heat sink and fan are in place or damage to the device can quickly result.

There is a green LED to indicate the presence of power, and an ON / OFF latching switch to control the power to the board. | The input voltage through the barrel socket must be between 6.5 V and 12 V. Hence, if you wish to use it to its maximum capability you will need to remain in that range. This is a non-adjustable fixed power supply model, which is good enough for most applications. | Maximum output current to be 700 mA. However, it is probably better to use much lower voltages and current to be on the safe side in case you make a mistake on your breadboard circuit. | With 9V battery snap power cable T-type 5.5x2.1mm connector. | How to use: This is a plug-in power supply and the headers below the board simply plug-in to the breadboard. Once plugged in, the voltage rails to both sides on the breadboard then provide power. You then use the yellow jumpers to select the voltage levels required. This is a dual output 3.3 V, 5 V regulated board and you can have either voltage on either rail on the breadboard, which is very useful.

Universal design to fit all vehicles with a standard 12-volt power source, universal fit for most car, SUV, truck, RV, boat, etc. (Just in case, please compare the size before purchase.) | Durable Anodized Billet Aluminum, luxurious dark red with metallic luster, durable and beautiful and not easy to fade. | It can effectively prevent foreign objects from entering the hole of cigarette lighter and prevent short circuit. | Note：This is an NON-FUNCTIONAL plug. Can decorate your own car, or as a lovely holiday gift. | We try our best to pack as good as possible to avoid possible problems such as scratching. If you are not 100% satisfied, please let us know and our customer service team will help you return or refund.

This cooling fan is specially built for Raspberry Pi 4B / 3B +. The heat sink and fan are integrated, heat conduction + heat dissipation, and the function is more significant and efficient. | The fan blade adopts NACA airfoil design, optimizing air flow, reducing noise, more wind, and better heat dissipation performance. | Aluminum alloy heat sink, heat conduction faster. | The back is equipped with thermal conductive glue, which can be directly pasted by tearing off the adhesive paper, which is easy to install. | Equipped with an upgraded heat sink package, which has significant heat dissipation function and can be used with different Raspberry Pi Board.

This 12-volt accessory plugs into most vehicles! SIZE A standard on most American/Japanese cars. Universal design to fit all vehicles with a standard 12-volt power source, universal fit for most car, SUV, truck, RV, boat, etc. | Your package will include 2 PCS cigarette light button plug that's made with an epoxy UV layer to keep the color and letters from fading. | The button also has a chrome metal trim for a stylish design. | This plug features a real functioning cigarette lighter coil unlike other simple plugs and covers on the market. | Please Note: the button can be twisted tight if it comes loose.