【Feature】Low power consumption,small size,high sensitivity and precision positioning,wide coverage. | 【Application】For vehicle,mobile phone,camera,vehicle monitoring,and other mobile positioning system. | 【GT-U7 Module】Working baud rate:9600 (modifiable);Working voltage:3.6V-5V;Compatible with NEO-6M 51 MCU STM32;Small size 27mmx26mm,can be inserted directly or choose patch (with positioning holes). | 【Function】With a distributed active ceramic antenna, the GT-U7 enables high-precision positioning and fast positioning even in narrow urban skies and dense jungle environments. | 【USB Interface】You can directly use the phone data cable to view the positioning effect on the computer.USB connects directly to the computer. (Using the serial port function of the upper computer,no external serial port module is required.)

Main Chip: ENC28J60-I/SO;Power supply:3.3V. | RJ45 connector HR911105A isolation transformer. | Board size:56mm x 34mm/2.2Inch x 1.33Inch.

【HC-05 Wireless BT Module】With this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your motherboard project, and then you can use your smart phone to control some gadgets, such as: switch, LED. | 【Working Voltage】3.6V to 6V,Default baud rate:9600,Default pin:1234,Press the button; the module enter the AT mode. AT commands are executed only in AT mode. | 【master and slave mode】Its communication is via serial communication which makes an easy way to interface with controller or PC. It's ideal replacement to your wired serial connection. | 【Application】Used for GPS navigation system, water and electricity gas meter reading system.

Size:40mm×40mm/1.57"×1.57";Working current 4.3-4.6A;Lead length 300mm,RV standard line single head. | Uses:Can be used for CPU cooler, backup power supply, car portable cooler, liquid cooling, etc.It can also be used for DIY to make car drinks warm/cold, cool or heat in minutes. | Note: The side marked "TEC1-12706" is the cooling side and the other side is the heating side;Should be used with a radiator to avoid being burned out,coated with thermal grease on radiator surface. | Features:Small size,light weight;Precise temperature control,excellent performance,high efficiency. | How it works:By simply reversing polarity, it gets cold or heated to boiling in a matter of minutes.