Dual-Spectrum Thermal Phones: Verify Modes and File Labels

A phone offering thermal imaging and night vision should document the output of each mode. Do not assume that the phrase “dual spectrum” means the device fuses both channels into one calibrated image or provides a particular synchronized recording feature.

Identify the channels being offered

The current R4 GT listing describes thermal imaging and night vision. Ask the supplier to identify the camera or mode used for each output and whether a visible-light reference is also captured. A product-level list of cameras does not specify how the application combines them.

Check whether the modes are separate or combined

• Ask for the exact mode names and application version.
• Confirm whether channels can only be selected separately or are displayed together.
• If a combined view is claimed, request a demonstration and an explanation of what is overlaid.
• Check whether saved files retain separate channels, a composite image or only the current screen view.

Prevent mislabeled inspection evidence

Agree on filenames or record fields that identify thermal, night-vision and ordinary images. Do not interpret brightness in a night-vision image as a temperature value. Have reviewers use the file type appropriate to the decision being made.

The thermal-versus-night-vision guide explains the general distinction; the R4 GT workflow provides a broader setup reference. This page concerns channel documentation and file handoff.

Source and limit

R4 GT product page. No fusion algorithm, calibration of a combined image or synchronized dual-channel test is verified here.