PROTMEX PT6708 User Manual

PT6708 Calibration method
1、In the shutdown state, first press and hold the "H" and "MAX" keys at
the same time, and then press the power button without letting go, until
the LCD screen is lit up and release all hands to enter the debugging
mode.

PROTMEX PT6708 Specifications

General

Temperature Accuracy	±1°C
Humidity Accuracy	±5% RH
Display	LCD
Humidity Range	0%RH~100%RH
Power Supply	2 * 1.5V AAA Batteries(Not Included)

Summary

PT6708 Calibration Method

Enter Debugging Mode

Press and hold 'H' and 'MAX' keys, then press power button until LCD lights up to enter debugging mode.

Configure Sound Source

Turn on standard sound source, set output to 1kHz, 94dB. Use buttons to control audio output and frequency.

Perform Calibration and Save Data

Insert microphone, start sound source, save stable data with 'H' key. Switch to C-weighting and save again before shutting down.