Feature: 1. It is based on the principle that a photosensitive element converts ultraviolet light into a measurable electrical signal, realize online monitoring of ultraviolet light. 2. The measurement data is more comprehensive. The product outputs 485 signals, can communicate at a distance of 2000 meters, and supports secondary development. 3. With wall‑mounted waterproof shell, high protection level, can be used in outdoor rain and snow environment for a long time. 4. It can measure highly sensitive ultraviolet rays from 290-390nm and accurately measure the intensity of ultraviolet rays. 5. It is widely used in environmental, meteorological, agricultural and forestry testing. Measure ultraviolet rays in the air and under artificial light sources. Specification: Item Type: Aluminum UV Transmitter Width: Approx. 8cm / 3.1in Height: Approx. 5.8cm / 2.3in Model: RS-UV-N01-AL Weight: Approx. 306g / 10.8oz Type: Type 485 Power Supply: DC7~30V RS- Company Number UV- UV Transmitter N01- 485 Communication (RTU Agreement) AL Aluminum Shell DC Power Supply (Default) 7-30VDC Maximum Power Consumption 0.06W Accuracy ±10% FS(60%RH 25℃) UV Intensity Range 0~15 mW/cm² Resolution 0.01 mW/cm² UV Index Range 0~15 Measurement Wavelength Range Wavelength 290~390 nm Response Time UV Intensity 0.2s UV Index 0.2s Output Signal 485(RTU Protocol) Interface Specification: Line Color Introduction Power Supply Brown Power Supply (7~30V DC) Black negative pole Communication Green 485-A Blue 485-B Basic Communication Parameters: Code 8-Bit Binary Data Bit 8 Digits Parity Bit Not Support Stop Bit 1 Bit Error Checking CRC (Redundant Cyclic Code) Baud Rate Can be set to 2400bit/s, 4800bit/s, 9600bit/s, the factory default is 4800bit/s Data Frame Format Definition: Adopt RTU communication protocol Initial Structure: ≥ 4 bytes of time Address Code: 1 byte Function Code: 1 byte, the command function of the command issued by the host. The transmitter can use function codes 0 x 03 (read register data), 0 x 06 (write register data register data), 0 x 10 (write multiple register data). Data Area: N bytes (The data area is specific communication data. Please note that the high byte of 16-bit data is in the front)Error Check: 16-bit CRC code End Structure: ≥ 4 bytes of time Address Code: The address of the transmitter, which is unique in the communication network (factory default 0x01) CRC Code: Double-byte check code. Package List: 1 x Transmitter1 x Connection Line1 x English Manual Note: Possible reasons why the device cannot be connected to the PLC or computer: 1. The computer has multiple COM ports, and the selected port is incorrect2. The device address is incorrect, or there are devices with duplicate addresses (all factory settings default to 1)3. The baud rate, check mode, data bit, and stop bit are wrong4. The 485 bus is disconnected, or the A and B wires are reversed5. If there are too many devices or the wiring is too long, power supply should be nearby, add 485 repeater, and add 120 resistance Ω terminal6. USB to 485 driver is not installed or damaged7. The equipment is damaged