Here's how such a module might work:

Infrared Tracking: This module typically includes one or more IR sensors (IR receivers) sensitive to infrared light. These sensors can detect IR signals emitted by IR transmitters, such as those found in IR remote controls or other IR sources.

Relay: Like the previous descriptions, this module contains a relay that functions as an electronic switch. It can be controlled by the module's circuitry. When an IR signal is detected, the relay may switch to an "on" state, allowing current to flow through the connected circuit. Conversely, when there is no detected IR signal or a different condition is met, the relay may switch to an "off" state, interrupting the current flow.

Voltage Compatibility: The unique feature of this module is that it can operate at both 5 volts and 12 volts. You can select the voltage level that suits your specific project or application, making it versatile for various power supply scenarios.

Sensor Module: The sensor module typically includes the IR receivers, signal conditioning components, and possibly a microcontroller or logic circuitry for processing the received IR signals and controlling the relay.