Feature: 1. WORKING PRINCIPLE: The temperature and humidity sensor adopt excellent digital integrated sensor with reliable digital processing circuit, so as to convert the temperature and humidity in the environment into the corresponding numerical display 2. STABLE AND RELIABLE: HVAC temperature humidity transmitter adopt full digital conditioning circuit, 4‑20mA current signal output is more stable, can be reliably monitored 3. WATERPROOF AND IMPACT RESISTANT: The temperature humidity sensor transmitter has IP68 multi layer waterproof protection, 45 degree angle impact resistant, removable prevent blocking design 4. APPLICABLE SCENARIO: Temperature humidity sensor transmitter can be used in weather station, data detection, outdoor greenhouse, museum, storage warehouse, building automation 5. WIDE APPLICATION: HVAC temperature humidity transmitter is widely used in humidifier, dehumidifier, frequency converter, solenoid valve, air conditioning Specification: Item Type: HVAC Temperature Humidity Sensor Transmitter Power Supply: 12V-36VDC Output Signal: RS485 signal Accuracy Range: Temperature: ±0.3℃, Humidity: ±2%RH Temperature: -40~120℃ Humidity: 0-99.9%RH Wire Specification: Red: Power supply(12-36VDC) Yellow: 485+ White: 485- Black: Negative(ground). Package List: 1 x Transmitter2 x Screw2 x Wall Plug1 x Card Pin2 x Accessories