As a thumb-rule, 1 KVA UPS can support 3-4 PCs/Laptops (with TFT Monitors), simple routers/switches and a simple EPABX. Online UPS typically come in 1KVA, 2KVA,3,5 and 10 KVA and above. While planning for your UPS capacity, it's better to plan for somewhat higher capacity for future capacity.
A rubber band (also known as an elastic band, gum band or lacky band) is a loop of rubber, usually ring shaped, and commonly used to hold multiple objects together Most rubber bands are manufactured out of natural rubber or especially at larger sizes, elastomer, and are sold in a variety of sizes.
This kit contains a 100 rubberbands
A breadboard is a solderless device for temporary prototype with electronics and test circuit designs. Breadboards are used for rapid prototyping of electronic projects, without needing to solder the components to make it work. Most electronic components in electronic circuits can be interconnected by inserting their leads or terminals into the holes and then making connections through wires where appropriate. The breadboard has strips of metal underneath the board and connects the holes on the top of the board.
This is a Full size breadboard or standard size breadboard with 800 tie points, the breadboard measures 55mm x 170mm, you can combine two or more of this breadboard to make larger or wider breadboards, it also includes an adhesive foam at the back, to mount it securely on most surfaces.