Actuator
The part of a device that acts on the physical world, for example a switch, lock, motor or valve controlled remotely.
Where a sensor reads, an actuator does: it switches a pump on, locks a door or adjusts a thermostat after a command from the platform or a local rule.
Why it matters for business
Remote control can save site visits and react faster, but it raises the stakes for security and reliability: a wrong command has real-world consequences.