DLP-RFID2D USB Dongle. 1.0 INTRODUCTION. The DLP-RFID2 is a low-cost, compact module for reading from and writing to HF RFID transponder. tags via an internal or external antenna. It has the ability to both read and write data in addition to. reading the unique identifier (UID). All of the DLP-RFID2âs electronics reside on a single, compact. PCB, and all operational power is taken from one 3.0- to 5.0-volt supply. An external antenna can be. connected via a standard u.fl connector or IO pin/pads.
Quick Answer. Water molecules have covalent bonds. Each molecule consists of two hydrogen and oxygen covalent bonds. However, when water molecules are placed together, as they are normally, the hydrogen atoms in each molecule can form hydrogen bonds with the oxygen atom of other molecules. Continue Reading.
When two water molecules get close together, the polar forces work to draw the molecules together. The oxygen atom of one water molecule will bond with several hydrogen atoms of other water molecules. These bonds are called hydrogen bonds. Hydrogen bonds are not as strong as covalent bonds, but they are strong enough to bind water molecules together and give water its unique characteristics.