SALTO XS4 Electronic Half Escutcheon Ax660 for panic bar; 1 handle; any type; built in mechanical cylinder with audit for concealed rod panic bars. Technology: Mifare + Bluetooth LE + HSEand standard square spindles; finishes and handles. Mechanical cylinder not included. Half escutcheon model; only compatible for Von Duprin 98 / 9957 concealed vertical rod panic bar. Gain durability feature included by default. For exterior use; consider adding the E5 (IP56) option.(Available only in the USA and Canada)