libsensors4-dev 1:3.6.0-2ubuntu1.1 (amd64 binary) in ubuntu focal

 Lm-sensors is a hardware health monitoring package for Linux. It allows you
 to access information from temperature, voltage, and fan speed sensors. It
 works with most newer systems.
 .
 This library is only functional with a Linux kernel, it is provided on
 non-Linux systems for portability reasons only.
 .
 This package contains the static library and header files used in
 development.