These Analog Transmitters and Receivers are user oriented installation on bus type signal control system. These Analog Transmitters and Receivers provide complete automation of the widespread signals from various sites, into a easy to use interface. With the ability to be used up to the distance of 10 Km, without requirement of the repeaters or amplifiers, these systems allow for controlling and monitoring from any point. These contain bus powered devices and are immune to noise disturbances and provide a completely digital communication. The bus and power wiring easily fit in the same conduit and thus, require less space.