WhereCall V The material supply label is a wireless mounted simple telemetry device. It is very important for wireless material flow replenishment system, It can be easily installed at the end of the line - No wires and conduit required. Component requests can be made without the need for any hard wire connections. In addition, It can also provide feedback to the operator by incorporating an eight-character LCD display, The display counts the length of time since the button was last pressed. WhereCall V Can be used as the basis for wireless calling system solutions, Without wire, Line end suspension, Or to replace paper-based kanban systems.