It measures the transmittance for use on all automotive windows, including insulation paper, organic material, painting, coating material, film, glass, and plastic sheets. This meter also has the ability to measure the sun-blocking capabilities of window curtains. It is used by the police and inspection stations to measure (there will have security regulations).

* Features
Display : 3-digit LCD. The maximum display value is up to 999.
Auto power off : the transmitter auto-power off in 60 seconds, and the receiver auto-shutdown in 90 seconds.
Battery life : 4000 continuous measurements.
Continuous use function
Auto data hold function

* Specifications
Weight : Approximately 135g (batteries not included).
Battery : 3V CR2032 X 2 (one per each device)
Operation temperature and humidity : 0 °C to 50 °C < 80%RH (no condensation)
Storage temperature and humidity : -70°C to 50°C < 80%RH

* Electrical Specification
Environmental conditions at 23°C ± 5°C with RH < 80%
Measurement range of transmittance : 0% - 100%
Measurement range of thickness : 0mm - 6.5mm (0"-1/4")
Accuracy : ±2% (Calibration and traceable ISO 17025 labrary)
Repeatability : ±1%
Response time : 4 seconds