Abstract: A device used to release, retract, and store a cable or a cable-like structure that provides an easy solution for cable or cable-like structure applications. The device can be used for all kinds of electronic devices in private entities and public facilities tidily and safely. Applying the devices within the present patent application will significantly reduce safety hazards caused by ill-placed or tangled cables or cable-like structures while also storing said cables or cable-like structures when not in use.

Abstract: A device used to release, retract and store a cable or a cable-like structure provides an easy way for cable or cable-like structure applications. The device can be widely used for all kind electronic devices in private homes and in public facilities tidily and safely. By apply the devices in present patent application, there will significantly reduce safety hazards and solve problems related to cable messing up or winding each other around electrical devices.

Abstract: A multifunctional underground irrigation system comprises of an underground irrigation, fertilization and respiration (UIFR) device with three types of air/pressure releasing structures, an universal unique label and label reader, three irrigation monitoring indicators, various sample collecting channels and measurement devices, a movable monitoring device, a water supply system, and a data center. The water containers, water drip controlling device, water flow rate controlling device, AAB device and AWPAE devices constitute the irrigation device for field plants or potted plants culture. The combination of the wireless technologies with various sensors in one of three indicators enables the underground irrigation to be visible, hearable, viewable and remotely controllable at real time and real-location manner for precision management of plant cultivation. The movable device provides a way to monitor the water supply system and to calibrate data obtained from UIFR devices.