Johnson Controls HE-68N2-1N00WS Sensor

The Johnson Controls HE-68N2-1N00WS is a high-precision wall mount humidity transmitter designed for seamless integration with Building Automation Systems (BAS) and Direct Digital Control (DDC) networks. This unit serves as the direct replacement for HE-67N2-1B00W, as well as the HE-67N2-2B00W and HE-67N2-1N00W models. Engineered for rigorous commercial HVACR environments, it features a 1000 Ohm thin film nickel sensing element that provides stable temperature data alongside a ±2% humidity accuracy rating across a 0 to 100% RH range. For localized control, the device includes a warmer/cooler temperature setpoint adjustment dial and a manual occupancy override button, allowing field technicians to provide occupants with immediate comfort tuning. The HE-68N2-1N00WS sensor supports flexible power configurations, operating on 14 to 30 VDC or 20 to 30 VAC, and utilizes a user-selectable 0-5 VDC or 0-10 VDC output for maximum controller compatibility. Field wiring is simplified via a 9-position screw terminal block and a 6-pin modular jack for direct Zone Bus access.

Key Benefits

• Dual-Function Sensing: Combines a high-accuracy humidity transmitter with a 1k Ohm nickel RTD temperature sensor in a single wall-mount housing.
• Universal Controller Support: Onboard DIP switches allow for rapid configuration of humidity output signals (0-5V or 0-10V) and LED behavior.
• Enhanced Occupant Logic: Integrated temporary occupancy override and setpoint adjustment dial facilitate more granular zone control without needing a separate interface.
• Streamlined Installation: Features a standard 80 x 80 mm enclosure footprint with screw clamp terminals that accommodate 16 to 24 AWG wiring.
• Legacy Compatibility: Specifically engineered to replace aging HE-67 series sensors, ensuring existing mounting sites and wiring can be reused effectively.

Common Questions

Which systems are compatible with the 1000 Ohm nickel sensing element?
The nickel element is a standard input for most Johnson Controls Metasys systems and other controllers calibrated for a 1k Ohm Nickel (DIN) curve. Always verify your controller's input configuration before wiring.

Can the humidity output signal be changed after installation?
Yes, the humidity output is field-selectable between 0-5 VDC and 0-10 VDC using the internal power supply/output selection switches located on the PCB.

Is this unit suitable for outdoor or high-moisture air handlers?
No, this is a room-style sensor designed for indoor wall-mount applications. Exposure to condensing moisture or outdoor elements may damage the thin-film sensing element and void field reliability.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.