RS485 waterproof temperature and humidity transmitter I. Features: Standard current / voltage output. Linear response, digital temperature and humidity sensors. Dedicated circuit, wide measuring range, high precision, good interchangeability. Second, the application of occasions: HVAC HVAC, pharmaceutical chemicals, communications room, environmental monitoring, clean, intelligent buildings. Third, the wiring diagram Power supply: 12V DC ± 10% 24V DC ± 10% （Default） Rated current