Instruction manual for the temperature and humidity transmitter, including overview, technical parameters and electrical wiring diagram
The NKHT-3S-B-F-TT series transmitter measures indoor temperature and humidity using a capacitive humidity element and a microcontroller for linearization, outputting frequency signals directly without AD conversion. It is designed for wall‑mount installation with a hidden wiring outlet on the rear.
The manual provides technical specifications, wiring diagrams, and installation notes, including required upright placement during testing after 40 minutes of power‑on. This manual is written in Chinese.
| Temperature accuracy | + 39%9RH @25°C, 40-60%RH |
|---|---|
| Temperature accuracy (alternative) | 0.5°C @25°C |
| Output (temperature) | -20~+805°C 1-~2kHz square wave |
| Output (humidity) | 0~100% RH 1-~2kHz square wave |
| Supply voltage | 24 VDC / 1‑4 mA |
| Operating temperature range | -20~+805°C |
It requires a 24 VDC supply with a current of 1 to 4 mA.
After powering on for forty minutes, the transmitter must be placed upright for testing.
It outputs a square‑wave frequency signal for both temperature and humidity measurements.