The KH-90 Sensor Card is typically a component used in various electronic applications, particularly in systems that require sensor data for monitoring and control. It is often designed to support multiple types of sensors for versatile applications. This usually features a small form factor for easy integration into existing systems or enclosures. They provide both analog and digital outputs, allowing for integration with various systems and devices. Apart from this, the KH-90 Sensor Card can be used in smart home systems to monitor environmental conditions and control HVAC systems or other devices.