The radio manual call point consists of a housing part and a switching unit incl. radio electronic and dual band antenna. The FDM273 is battery-operated and can be mounted at each place within a radio range. Manual call point with indirect alarm actuation be breaking the glass and pressing the pushbutton. The housing FDMH273-R, the switching unit FDME273 and the 3.6 V lithium battery must be ordered separately.