Overview
The Johnson Controls HE-69520NP-0 is a duct-mounted relative humidity and temperature sensor designed for precise environmental monitoring in commercial HVAC and building automation systems (BAS). Housed in an all-plastic plenum-rated enclosure, it combines humidity and temperature sensing elements inside a single duct probe to simplify installation and optimize indoor air quality.
Features
- Combined relative humidity and temperature monitoring in one duct probe
- Accurately measures relative humidity with a +/-2% RH accuracy rating
- Employs a premium Pt1000 Class A Platinum RTD temperature sensing element
- Features a durable all-plastic housing optimized for duct-probe thermal performance
- Simplifies multi-system integrations with a user-selectable output voltage range
Specifications
- Humidity Accuracy: +/-2% RH
- Temperature Sensor Type: 1k Ohm Platinum RTD (Class A)
- Humidity Output Signal: Proportional 0-10 VDC
- Input Power Requirements: 14 VDC to 30 VDC or 20 VAC to 30 VAC (50/60 Hz)
- Probe Length: 6.25 inches
- Enclosure Rating: Plenum rated (UL 2043), UL flammability compliant
Applications
- Commercial office buildings and institutional HVAC monitoring
- Direct-mount integration with building automation systems and controllers
- Return, supply, or exhaust air duct monitoring in handling units
- Economizer control and indoor air quality (IAQ) tracking strategies


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