The act of sensing the absence or the presence of a substance (object) with a non-contact or contact sensing device is known as presence sensing. The sensors generate an output signal (electrical) that can be utilized to control processes or equi

An SSR or a Solid State Relay is a piece of electronic switching equipment which when applied by

A switch that can be operated electrically is known as a relay. It consists of several operating contact terminals as well as a group o

Light curtains come under optoelectronic devices that are utilized to defend personnel in the proximity of moving machinery th

A photo eye or a photoelectric sensor is a gadget that helps in discovering the present and absence of the object as well a

A counter or a tachometer is an instrument that helps in measuring the speed of rotation of a disk or shaft, like that present i

A varistor is an electrical device having an electrical resistance that differs with the potential applied to it. A varistor is popularly known as Voltag