ZCKJ533 is the contact body ZCKJ5, with the front cover of ZCKZ033, which is the XCKJ limit switch cover, plus an indicator light module, which has two neon lights that are 110V-120V AC.

ZCKJ533 has been discontinued since 2014 and is replaced by the contact body ZCKJ534. ZCKJ534, which is the ZCKJ5, has the cover ZCKZ034, plus an indicator light module, which has two LEDs, 110-240V AC.