1Widely used in agricultural greenhouses, flower cultivation and other occasions that require light intensity, temperature and humidity monitoring. 2 Wall-mounted, easy to install, small in size, saving space. 3. Compact and portable design, high-density material casing, airtight and moisture-proof effect is remarkable. 4. Exquisite welding circuit board and fully automatic robot welding process ensure that the circuit board signal is stable, accurate and long-term reliable. 5. Using high-quality optical components, the spectral characteristics are close to visual sensitivity, and can measure a wide range of brightness of 1 lx with high precision. 6. Adopt 485 communication, standard modbus-rtu communication protocol, communication address and baud rate can be set, the maximum communication distance is 2000m/6561.7ft. 7. It adopts 0-30V DC wide voltage power supply, which has low power consumption and energy saving. 8 waterproof design, can be used indoors and outdoors to meet more needs of customers. Condition: Item Type: Light Intensity Temperature Humidity Transmitter Material: Polyester Plastic Color: As shown in the picture Dimensions: Approx. 13x11.7x5.5cm / 5.1x4.6x2.2in Weight: Approx. 208g/ 7.3oz DC Power Supply (Default) : 10-30V DC Maximum power consumption: 0.4W Humidity accuracy: 3%RH (5%RH~95%) RH, 25C) Temperature accuracy: 0.5C (25C) Light intensity accuracy: 7% (25C) Light intensity range: 0-200,000 Lx Temperature and humidity range: -40℃～+60℃, 0%RH～80%RH Long-term stable temperature: 0.1C/y Long-term stable humidity: 1%/y Long-term stable light intensity: 5%/y Response time Temperature: 18s (1m/s wind speed) Response time humidity: 6s (1m/s wind speed) Response time light intensity: 0.1s Basic communication parameters: v:* {behavior:url( >Default VML);} o:* {behavior :url(default VML);} x :* {behavior:url(default VML);} .shape {behavior:url(default VML);} Encode 8-bit binary data bits 8-bit parity bit > no stop bit 1 Bit error check CRC (redundant cyclic code) Baud rate can be set Can be set to 2400bit/s, 4800bit/s, 9600bit/s, the factory default is 4800bit/s Data frame format definition: Using Modbus-RTU communication protocol , the format is as follows: Initial structure 4-byte time address code = 1 byte function code = 1 byte data area = N bytes Error check = 16-bit CRC code end structure 4-byte time address code: Yes Send The address of the device in the communication network (factory default 0x01). Function code: The command function of the host sending commands. This transmitter only uses function code 0x03 (read register data). Data area: The data area is specific communication data. Please note that the high-order bits of the 16-bit data are represented by