Temperature & Humidity Sensor, RS485 - SEN0438

SEN0438 is an RS485 temperature and humidity sensor. It uses a high-quality digital integrated transducer and reliable digital processing circuit to convert the temperature and humidity in the environment into corresponding RS485 signals. And it can reliably carry out centralized monitoring jobs with the host computer system. Featuring a wide measurement range, high detection accuracy, and a fast response speed, the module supports temperature detection of -40 to 120°C and humidity detection of 0 to 99.9% RH. Fully wrapped by the aluminium alloy shell, the sensor is waterproof and heat resistant, which makes it suitable for harsh environments. Besides, its probe employs a breathable and dust-proof design that effectively protects the internal circuit board and prolongs the service validity period. It has remarkable long-term stability, low latency, high resistance to chemical pollution, and superior repeatability.

• Temperature accuracy is ±0.3°C (25°C), humidity accuracy is ±2%RH (25°C)
• Sampling cycle period is 3 sec, power supply voltage range from 12 to 36VDC
• Product size is 200mm(L) × 15.7mm(D) / 7.87×0.62”
• RS485 signal output signal, standard MODBUS RTU communication protocol
• 9600 (default) baud rate
• Display resolution: temperature: 0.1°C; humidity: 1%RH
• Sensitivity attenuation value: temperature＜0.1°C/year; humidity＜0.5%RH/year