LED Temperature Humidity Sensor Digit Display RS485 Modbus RTU Humidity Temperature Sensor
Description: Temperature and humidity combined sensor AM2320 digital temperature and humidity sensor is a digital signal output has been calibrated. Using special temperature and humidity acquisition technology, ensure that the product has a very high reliability and excellent long-term stability. Sensor consists of a capacitive moisture element and an integrated high-precision temperature measurement devices, and connected with a high- performance microprocessor. The product has excellent quality, super fast response, strong anti-interference ability. Specifications: Working Voltage: DC 5-40V(6.5-28V recommended) Working Current: Digital tube turn off is 5MA(12V), Digital tube turn on is 18MA(12V) Serial Baud Rate: 9600(default), N, 8, 1 How to use: 1. Display "Eror" after power-on. If "Eror" is displayed for a long time, it indicates that the sensor is not connected or is damaged. 2. After 5 seconds, display the temperature or humidity. 3. Trigger "KEY" button to switch the display temperature and humidity.(This parameter is powered down memory). 4. Press and hold the "KEY" button for 3 seconds to turn off or turn on the display.(This parameter is also powered down memory). Package Includes: 1 × Module 1 × External Sensor Note: 1. If the digital tube is turn off after power-on, press and hold the "KEY" button until the digital tube is turn on. 2. With the built-in sensor version (R444A01_A), turn on the display for a long time will let the temperature rise 1-2 degrees Celsius. It is recommended to turn off the digital tube, or use a version with an external sensor (R444A01_B).
Product Features
- The voltage conversion sensor module is DD4012SA, a high-efficiency and low-heat voltage converter
- By modifying the RS485 address, up to 247 module s can be connected (More than 16 devices, it is recommended to use RS485 repeater)
- Temperature and humidity sensor is AM2320
- RTU protocol, 03 Read, 06 Write
- Widely used for dehumidifiers, testing and inspection equipment, automotive, automation, gas stations, home appliances, humidity control, medical, and other relevant humidity measurement and control
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