SMSCOM

SMSCOM sits only in the measuring category here, with controllers in four families. The Twincontroller in MK2 at 4.5 and 7 A and in the PRO version at 4.5 and 7 A. The Hybrid Controller MK2 at 4, 8 and 16 A. The SPC series at 8 and 16 A. And the Smart controller MK2. The heavier families have slave versions, the SPC SLAVE 16A and the Twincontroller PRO Slave, letting you chain a second unit rather than build a second system.

Where it sits, and mind the separate sensors

All of it is under Measuring and Control. Two items are not controllers but accessories: the Smart NTC sensor and the Twincontroller pro light sensor. They do not suit every version, so check your controller's page for whether it accepts an external sensor before adding one. And start at the amps here too, because that limits what you may put on it.