Renke Duct Temperature and Humidity Sensor HVAC Air Duct Sensor

Probe tip filter uses 25um stainless steel mesh that permits free gas molecule entry while physically blocking dust particles and water droplets from reaching the sensing element inside.

Flanged mounting plate equipped with a silicone sealing ring ensures an airtight seal between the sensor body and duct wall, preventing conditioned air from escaping during measurement.

Press-and-plug spring terminals accept 0.3 to 2.0mm2 wire diameter without a screwdriver, enabling fast, reliable field connections even in confined duct access spaces.

Four DIP terminals on the analog circuit board switch between -40 to 80, -35 to 35, -35 to 50, and 0 to 50 degrees C ranges on-site without disassembly or software tools.

RS485 variant uses the same four DIP terminal configuration to change the device address code on-site, simplifying multi-unit network commissioning without laptop or configuration software.

Dedicated EMC suppression components combined with industrial-grade processing chips maintain stable output in high-interference environments such as motor rooms and industrial HVAC plant rooms.

At 1m/s duct airflow, temperature stabilizes within 25 seconds and humidity within 8 seconds, enabling fast, responsive feedback for HVAC energy management and comfort control systems.

Drift specifications of 0.1 degrees C and 1% RH per year ensure consistent accuracy across years of continuous duct monitoring without recalibration in installed HVAC systems.

RS485 variant draws only 0.1W, supporting long-distance centralized power supply configurations across large HVAC duct networks without voltage drop or power budget concerns.

Product line spans basic analog and RS485 outputs at $26, OLED display variants at $37, and extended probe models with optional LCD at $49, covering all HVAC budget and display requirements.