NSB8MHC041-0 Johnson Controls Network Sensor

Overview

The Johnson Controls NSB8MHC041-0 is a multifunctional network sensor designed to function directly with Metasys system field controllers, Facility Explorer programmable controllers, and Verasys or Smart Equipment. This next-generation room sensor monitors zone temperature, relative humidity (RH), carbon dioxide (CO2), and occupancy, effectively replacing multiple individual sensors to reduce wall clutter and lower installation costs. It transmits critical data via the Sensor/Actuator (SA) bus to drive efficient building automation control strategies.

Features

• Multiple sensing options in one device: monitors zone temperature, relative humidity, and CO2 levels.
• Onboard passive infrared (PIR) occupancy sensor detects motion to adjust temperature based on occupancy status, maximizing up to 30% energy savings in high-energy environments.
• BACnet MS/TP protocol communication provides seamless compatibility with field equipment controllers.
• Simplified installation using standard modular phone jacks or screw terminal connections to connect the sensor to the controller.
• Features a clean, no-display design with a white enclosure and no visible external logo to match diverse architectural aesthetics.

Specifications

• Supply Voltage: 9.8 VDC to 16.5 VDC (15 VDC nominal from SA bus).
• Current Consumption: 3 mA maximum base draw, with an additional 15 mA maximum during CO2 measurements.
• Temperature Sensor Type: Digital temperature sensor with a range of 32°F to 104°F (0°C to 40°C).
• Temperature Accuracy: Plus or minus 1°F (0.6°C) for the zone sensor package.
• Humidity Sensor Type: Thin film capacitive sensor with plus or minus 3% RH accuracy between 20% and 80% RH.
• CO2 Sensor Accuracy: Plus or minus 30 ppm plus 3% of reading at 77°F (25°C), factory calibrated for altitudes up to 2,000 ft.
• Dimensions: 4 x 5 x 6 inches.
• Weight: 2 lbs.

Applications

• Commercial HVAC systems and building automation networking.
• High-energy usage environments requiring targeted occupancy control, such as schools, dormitories, offices, hospitals, and hotels.
• Specialized ventilation and indoor air quality monitoring programs demanding precision gas specialty measurement, humidity tracking, and temperature regulation.