The 8811 series thermostat is an electronic knob-type temperature controller with high precision, multiple control types, and a wide temperature range. Depending on the model, it can be used to measure ambient temperature or surface temperature of heating equipment, and has overheat protection function.
This manual explains the precautions for using the 8811 electronic knob‑type thermostat, including environmental limits, dust‑film removal, and wiring guidelines. It also details the specifications of each model, such as current rating, power, accuracy, temperature range, and control type.
Installation steps cover removal from packaging, wiring according to the diagram, mounting in a wall box, and securing the decorative cover. Operation instructions describe power‑on behavior, temperature setting via the knob, and power‑off procedure. The features section explains heating control, over‑heat protection (set at 50±2 °C), and temperature calibration methods. This manual is written in Chinese.
The product recommends using 4 mm² or smaller conductors for installation.
After the first power‑on, wait about 5 hours for the thermostat to achieve its best temperature‑measuring performance.
Adjust the knob to the heating start point, insert a screwdriver into the gap to pry the knob out, align the pointer with a standard thermometer, then re‑insert the knob.
The overheat protection temperature is set to 50 ± 2 °C.