I am having trouble with the components that are needed for the automatic soap dispenser, the PDS (product design spec) and the research that is needed. So far I have created a PDS with its requirement's but I believe that it lacks information and detail about the dispenser. Can someone help increase the detail of the PDS and research about current auto soap dispensers.

PDS requirements are :

Function

Environment

Maintenance

Cost

Manufacturing process

Material selection

quantity - Only a prototype

Aesthetics

Packaging

Disposal

Quality/safety

Assessment Task: Automatic Touchless Hand Sanitizer Dispenser Now almost every shop in UK provide hand sanitizer or hand soap to public. The problem is people still use hand to touch the handle all the time, it can spread the coronavirus. The are some auto soap dispenser selling on the market, but they all use their own soap which is quite expensive. This project is to design a kit which can be used on common hand sanitizer bottle. It will include a sensor, a motor, an actuator and a batter pack. Your task in this first assignment is to perform a thorough research into current auto soap dispensers in order to select and determine customer requirements for an auto soap dispenser. The outcome of this research should be summarised in the form of a product design specification (PDS) which specifies specific values or descriptions for the customer/end user requirements. Using the PDS, a series of design concepts should be developed and evaluated