Condition: 100% Brand New Item Type: Light Intensity Sensor Material: Polyester Plastics Color: As shown in the picture Size: Approx.13x11.7x5.5cm / 5.1x4.6x2.2in Weight: Approx.198g/7oz Application: For agricultural greenhouses, flower cultivation greenhouses, agricultural fields, electronic equipment production lines and other occasions that need light intensity monitoring. DC Power Supply (default): 10-30VDC Maximum PowerConsumption: 0.4W Light Intensity Accuracy: ±7% (25°C) Light Intensity Range: 0-65535Lux Long-term Stability Light Intensity: ≤5%/y Response Time Light Intensity: 0.1s Basic Communication Parameters: Coding8 bits binary system Data bits8 bits Parity check bitNone Stop bit1 bit Error checkCRC (redundant cyclic code) Baud rate can be set2400bit/s,4800bit/s and 9600 bit/s can be set, and the factory default is 4800bit/s Data Frame Format Definition: Adopt Modbus-RTU communication protocol, the format is as follows: Initial structure ≥ 4 bytes of time Address code = 1 byte Function code = 1 byte Data area = N bytes Error check = 16-bit CRC code End structure ≥ 4 bytes of time Address Code: is the address of the transmitter, which is unique in the communication network (factory default 0x01). Function Code: The instruction function of the command sent by the host. This transmitter only uses function code 0x03 (read register data). Data Area: The data area is the specific communication data. Note that the 16bits data high byte is in front! CRC Code: Two-byte check code. Possible Reason: 1) The computer has multiple COM ports, and the selected port is incorrect. 2) The device address is incorrect, or there is a device with duplicate addresses (all factory defaults are 1). 3) Baud rate, check mode, data bit, stop bit error. 4) The host polling interval and the waiting response time are too short and need to be set to more than 200ms. 5) The 485 bus is disconnected, or the A and B lines are reversed. 6) If the number of devices is too large or the wiring is too long, the power should be supplied nearby, add 485 intensifier, and increase the resistance of 120Ω terminal. 7) The USB to 485 driver is not installed or damaged. 8) Equipment damage. 1、It is widely used in agricultural greenhouses, flower cultivation, agricultural fields, electronic equipment production lines and other occasions that need light intensity monitoring 2、Waterproof and moisture-proof appearance design, can be applied indoors and outdoors to meet more needs of customers. 3、Exquisite welding circuit board, automatic manipulator welding process, to ensure the circuit board signal stability and accuracy, long-term reliable. 4、High quality optical components, close to the visual sensitivity of the spectral characteristics, a wide range of luminance can be determined by 1 lx with high precision. 5、Wall-mounted, easy installation, space saving. 6、With 485 communication, standard modbus-rtu communication protocol, communication address and baud rate can be set, the maximum communication distance is 2000m/6561.7ft. 7、Powered by 0-30V DC wide voltage, low power consumption, energy saving. 1 x Light Intensity Sensor 1 x Pack Fitting(2pcs screw, 2pcs nut)