Two position controller

Two position controller .

This module must consist in a  two position controller for discontinuous closed loop control systems and it must be provided with an input summing point to which the reference variable (non inverting input) and the controlled variable (inverting input) will be connected.
The binary state of the controller , whose hysteresis can be changed, must be visualized by means of two led; the controller shall be provided with two binary outputs at different voltages.
Technical features:

•Power supply: +15 V ; 0 V ; -15 V
•Input summing point
•Signal voltage range: -10V, ..., +10V
•Output voltages:  0/+5 V ; 0/+10 V
•Adjustable hysteresis: 0 ....  ± 2.5 V
It must be mounted on an insulated didactic module, it must show a schematic diagram and 2 mm terminals for the electrical connection; one potentiometer, one resetinput for the restoration of the initial conditions, one led indicator of over-range. It must include also a bus for the supply that allows the connection between the panels