The initial thermal imaging module of HT821A/HT821A Plus
infrared thermal imager is 96 * 96, but with our technical
support, it can be extended to 240 * 240, making the
observation effect clearer and achieving ultra clear image
quality
HABOTEST Macro Lens purchase link
HT821 thermal imaging instrument macro lens professional grade 50 μ m thermal sensitivity electronic maintenance/PCB testing - AliExpress 1420