Two assumptions regarding this equipment.
1) Each elemental headhunter point is equipped with five sensors, one for each outfit or dispenser. Each can be placed in distinct, otherwise qualified locations.
2) A unit equipped with an active probe can utilize its sensor to detect another unit, resulting in a net bonus of (+1 for indirect +3 for sensor) +4 to the shot, prior to considering the spotter's movement and any additional attack modifiers. (A unit equipped with an operational probe and LRMs would incur an identical +4 penalty while indirectly launching its own missiles.)
Are these accurate?