The earlier developed disinfection channels do not operate automatically because it required human contact and without motion sensors for access control system. There is a need for automated systems to ensure compliance with the WHO guidelines in order to reduce the spreading rate of the virus. Hence, this study developed a contact-free automated disinfecting channel to mitigate the spread of COVID-19 in Public Places. The design of a contact-free automated disinfecting channel was achieved using The ATMEGA328P Microcontroller, which controls the logic state of the peripheral devices connected as an input or output, MLX90614 is a contactless temperature sensor that measures human body temperature wirelessly through infrared sensor radiations for achieving contactless measurement. The designed system was implemented using C programming language, which allowed the users to gain easy access to the system. The implementation of this research will curb the spread of COVID-19 by performing a contact-free temperature screening to allow access and spray disinfecting solution mist on the person when the temperature ranges between 36.5°C and 37.5°C and unlock the automatic door for access or denied access if the temperature is beyond 37.5°C in public places. The performance evaluation of the developed channel was evaluated based on using System Technology Acceptance (STA), System Attitude Towards Use (SATU), Behavioral Intention (BI), System Perceived Usefulness (SPU), and System Ease of Use (SEU) on a Likert rating scale of 1 to 5. The response target of the STA, SATU, BI, SPU and SEU were 1,2,3,4 and 5, respectively and response mean of the STA, SATU, BI, SPU, and SEU were 4.18, 4.30, 4.30, 4.31 and 4.23 respectively. This showed that the response targets are greater than 3.5. A contact-free automated disinfecting channel that mitigates the spread of COVID-19 was developed. This research finds application in public places.