Model KA101 Style 125KHz PartNumber TTL level Compact 125KHz RFID reader module with TTL level serial output designed for straightforward integration into embedded systems and access control applications. The KA101 reads low frequency 125KHz RFID tags and delivers decoded tag IDs over a TTL level interface for direct connection to microcontrollers and controllers. Key benefits Easy integration: TTL level output simplifies wiring to microcontrollers and single board computers. Data is provided in a format that is quick to parse and use. Proven function: Built for reliable reading of 125KHz RFID tags, the module removes the need to design custom RF front ends and antenna systems. Saves development time: Ready to use module reduces hardware and firmware effort when adding identification and authentication features to a project. Compact form: Small PCB module with on board antenna fits into compact enclosures and prototypes. What this module does Reads 125KHz RFID tags and transmits tag ID data over TTL serial. Provides a straightforward interface for systems that accept TTL level UART input. Model and part information are Model KA101, Style 125KHz, PartNumber TTL level for clear specification matching. Compatibility and integration Works with common microcontrollers and single board computers that accept TTL serial communication. Verify host logic voltage before connecting. Typical host interfaces include UART RX and TX lines and a power supply connection to the module. Suitable for use in systems that require low frequency RFID tag identification. Physical and performance notes PCB module with on board antenna and standard signal pins for serial data and power. Designed to operate at 125KHz tag frequency and provide stable tag detection in typical low frequency environments. Check host system documentation for voltage level compatibility and required wiring. Practical use scenarios Access control: Add contactless door entry by reading employee ID badges and passing tag IDs to an access controller. Time and attendance: Integrate into attendance terminals to log staff check in and check out using 125KHz cards or key fobs. Product or asset identification in embedded projects: Use the module to tag and identify equipment during maintenance or inventory workflows. Why choose this module Model KA101 provides a focused solution for projects that need simple, reliable 125KHz RFID reading with TTL level output. Clear part identification and a standard serial interface make it suitable for developers, integrators, and prototype builders who need predictable behavior and easy integration. Basic integration reminder Confirm host logic voltage compatibility with the TTL level interface before connecting. Use UART receive and transmit pins plus power and ground to connect the module to your system.