The 1553BIR-BULK is an infrared (IR) end panel for 1553B series hand held enclosures. It is used by designers of remote controls and IR-linked handheld devices who need an IR emitter or receiver to see out through the end of the case.

The panel replaces the existing front plastic panel of the enclosure and is made from a dark red plastic filter that is transparent to IR. The part page lists the material as polycarbonate in red, with a UL94 V-0 flame rating. The series identifies this part number for all 1553 "B" sized enclosures.

The 1553BIR-BULK is sold singly, shrink wrapped, with a shipping weight of 0.02 lbs (0.01 kg). It is RoHS and REACH compliant. For 1553 "D" sized enclosures the series lists a separate part, 1553DIR-BULK.

Because it swaps directly for the standard front panel, it lets you keep the soft-sided 1553B case while adding an IR window at the end, a common need for handheld remotes and data transfer devices. Other accessories the series lists for the B size include the 1553BPCB prototype circuit board (sizes B and C, not battery versions) and the 1599CLIP or 1599CLIPGY belt or pocket clip.