QUES: Xtype is available with a range of sensors built into the luminaire

correct the punctuation.

CORRECTED: X-type is available with a range of sensors built into the luminaire.

QUES: If you want to know in advance what turns me off

correct the punctuation.

CORRECTED: If you want to know in advance what turns me off: /

QUES: Stop the DNAliens becoming the powerful Humungousaur

correct the punctuation.

CORRECTED:
Stop the DNAliens becoming the powerful Humungousaur.