This ready-to-use pack is part of the range diameter 22mm wireless and batteryless pushbuttons XB4R metal.This pack comprises one wireless and batteryless metallic pushbutton assembled on fixing collar and one receiver. Pushbutton and receiver are factory-paired.The wireless and batteryless pushbutton reduces installation time and cost by eliminating wiring and associated equipment between the transmitters and the control panel.This technology also allows an operator to be mobile or have a control mounted on-board of a vehicle (trolley, truck, etc.).The pushbutton is always available and requires no maintenance (no battery needed).