{"title":"RS485 Temperature  Humidity Sensor","handle":"rs485-temperature-humidity-sensor","url":"/products/rs485-temperature-humidity-sensor","description":"This industrial-grade RS485 temperature and humidity sensor features a high-precision digital transducer in a rugged aluminium alloy housing. With a wide measurement range and Modbus RTU communication, it's designed for integration into building automation, HVAC systems, and environmental monitoring networks.\n\nThe probe uses a breathable, dust-proof design that protects the internal circuitry while allowing accurate ambient readings. The waterproof, heat-resistant construction makes it suitable for harsh environments including greenhouses, cold rooms, and outdoor installations.\n\nKey Features\n\n\nRS485 Output – Standard Modbus RTU protocol for easy integration with PLCs, HMIs, and host systems\n\nWide Temperature Range – Measures −40 to +120 °C with ±0.3 °C accuracy at 25 °C\n\nHumidity Sensing – 0–99.9% RH with ±2% RH accuracy at 25 °C\n\nIndustrial Housing – Aluminium alloy shell, waterproof and heat resistant\n\nLow Drift – Temperature drift <0.1 °C/year, humidity drift <0.5% RH/year\n\nCompact Probe – 200 mm (L) × 15.7 mm (D)\n\n\nSpecifications\n\n\nTemperature Range – −40 to +120 °C\n\nTemperature Accuracy – ±0.3 °C (at 25 °C)\n\nTemperature Resolution – 0.1 °C\n\nHumidity Range – 0–99.9% RH\n\nHumidity Accuracy – ±2% RH (at 25 °C)\n\nHumidity Resolution – 1% RH\n\nSampling Period – 3 seconds\n\nPower Supply – 12–36 V DC\n\nOutput Signal – RS485\n\nProtocol – Modbus RTU\n\nBaud Rate – 9600 (default)\n\nDimensions – 200 × 15.7 mm\n\nWeight – 110 g\n\n\nWiring\n\n\nYellow – RS485 A\n\nRed – Power input (12–36 V DC)\n\nBlack – GND\n\nWhite – RS485 B\n\n\nIdeal For\n\nHVAC and building automation systems\nGreenhouse and cold room monitoring\nMuseum and hotel climate control\nIndustrial environmental monitoring\n\n\nPackage Contents\n\n1× RS485 Temperature & Humidity Sensor\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":3322,"title":"Default Title","sku":"DF-SEN0438","price":50.64,"on_sale":false,"in_stock":true,"available_quantity":790,"option1":"Default Title"}]}