The MSU71RDHTL sensor of temperature, humidity, illumination with OLED display

Module of the sensor of temperature, humidity, illumination, OLED display.

Temperature measurement range: from -40 ° С to + 80 ° С, accuracy 0.1 ° С.

Humidity measurement range: from 10% to 100%, accuracy 0.1%.

The modules are designed to create telemetry systems. The modules are designed to measure digital signals from sensors.

The source of digital signal is the digital I2C built-in sensor of temperature, humidity, illumination.

The module performs gathering, processing and transferring this data in the controller or PC via the RS-485 bus under the Modbus TRU protocol.

The modules have the following features:

- built-in sensors of temperature, humidity, illumination;

- built-in monochrome OLED display 64x48 pixels;

- indication from 1 to 4 parameters at the same time;

- built-in real time clock;

- indication of time and date;

- indication of a graph of change in measured parameter over time;

- the module connects to the RS485 bus via a 4-wire cable, including power;

- the module supports the exchange protocol: MODBUS RTU;

- indication of operation of the RS485 bus and a button for switching modes;

- automatic calculation of sensors coefficients;

- built-in algorithms of interaction and re-count of values;

- calculation of average value, search for min and max, addition or multiplication of two values, determination of threshold values, calculation of various parameters: dew points, probability of frosts and other arithmetic and logical actions.

- the module can work together with the controllers: “RD” or industrial controllers;

- module power supply from 5V to 25V.

Recommended supply voltage 5V. When powered from 24V with enabled display, the module will warm up a bit more and introduce distortions into the measured temperature of the built-in sensor.

Modification of the module is a basic version of the MSU71R and additional components: OLED display - D; temperature and humidity sensor - HT; illumination sensor - L.