1、Features
◆The real-time temperature and humidity data on site can be displayed after power-on, without the help of computers and other equipment; ◆High-definition LCD display, the data is clearly visible; ◆Automatically switch real-time temperature and humidity data without manual switching and adjustment; ◆The system is stable, there are few external interference factors, and the data is accurate; ◆Small size, easy to carry and fix.2、Scope of application
Widely used in supermarkets, factories, warehouses, office buildings, museums, unit buildings and other indoor spaces.3、Working and storage conditions
Working temperature: -40～85°C Working humidity: 0～100%RH Storage temperature: -40～125°C Storage humidity: <80%RH (no condensation)⊙Working Principle
The sensor has a 50Hz/60Hz frequency debounce function to achieve stable measurement. The visible light penetrating through the filter irradiates the imported photodiode, and the photodiode is converted into an electrical signal according to the visible light intensity. The electrical signal enters the single-chip system, and the single-chip system compensates the collected photoelectric signal for temperature according to the temperature sensing circuit. The product supports Modbus-RTU protocol format, and provides a variety of analog transmission for users to choose.⊙Technical Parameter
Power supply voltage: 6V～32V DC Measuring range: Temperature: -40~+85℃ Humidity: 0~100% RH Resolution: 0.01℃ Display resolution: 0.1RH (under minus 10℃, the screen does not display decimals, 485 displays decimals) Signal output: 485 communication Communication protocol: MODBUS-RTU Equipment power consumption: ≤250mW Protection level: IP55 Power-on response time: 2S⊙Size and Weight
Dimensions: specifications as shown belowMachine weight: 125g
⊙MODBUS protocol (customizable)
◆Communication method: 485 communication, transmission distance <1000 meters ◆Communication rate：9600,n,8,1 ◆Communication protocol: MODBUS-RTU protocol, the factory station number is station 1, can be modified as needed. The commands of the ModBus protocol include:⊙Wiring definition
| Line color | Brown | Black | Blue | Gary |
| 485 | Power+ | Power- | 485A | 485B |
⊙Preparation and inspection before use
Attention Please read this manual completely before use Connect the equipment correctly Confirm first ﹡ Check if the device is the same as the device you purchased ﹡ Check whether the appearance of the device is damaged ﹡ Check if the equipment accessories are complete Warning Failure to wire the wires in sequence may cause damage to the device and the instruments connected to the device When the input power exceeds the maximum access power of the device, it will cause damage to the device ⊙Failure analysis and elimination| 1、Sensor output signal is abnormal | 2、No signal output from sensor |
| ◆Check if the power supply voltage is stable ◆Check whether the power supply range is normal ◆Check if the line is virtual connected | ◆Check whether the positive and negative poles of the power supply and the ground wire are connected correctly ◆Check whether the power supply voltage meets the requirements |