NS-MHL7002-0 Johnson Controls Sensor

Overview

The Johnson Controls NS-MHL7002-0 is a vertical wallbox-mounted or surface-mounted NS Series Network Sensor designed to function directly with building automation digital controllers, including Metasys system Field Equipment Controllers (FECs), Input/Output Modules (IOMs), and Variable Air Volume (VAV) Modular Assemblies (VMA). Housed in a white enclosure measuring 120 x 80 mm, this sensor monitors zone temperature, relative humidity, and motion via an onboard passive infrared (PIR) occupancy sensor. It transmits real-time environmental data to a field controller over the Sensor Actuator (SA) Bus using a fixed address of 199.

Features

• Multifunctional Sensing: Monitors space temperature, relative humidity (3% RH accuracy), and motion within a single enclosure.
• Onboard PIR Occupancy Sensor: Detects motion to determine space occupancy status, enabling up to 30% energy savings by adjusting temperatures based on real-time usage.
• SA Bus Connectivity: Transmits data directly to a master controller using the Sensor Actuator (SA) Bus.
• Screw Terminal Blocks: Features reliable screw terminals for simple and flexible communication wiring terminations.
• Fixed Addressing: Pre-configured with a fixed network address of 199 for easy system integration.

Specifications

• Dimensions: 4-23/32 in. x 3-5/32 in. x 1-3/8 in. (120 mm x 80 mm x 35 mm)
• Enclosure Style: White base, vertical wallbox (WB) or surface mount (SM), without LCD display
• Power Supply: 9.8 to 16.5 VDC (15 VDC nominal) supplied via the SA Bus
• Current Consumption: 17 mA maximum (non-transmitting)
• Humidity Range & Accuracy: 0 to 100% RH (10 to 90% RH calibrated range); ±3% RH accuracy for 20 to 80% RH
• Temperature Measurement Range: 32.0°F to 104.0°F (0.0°C to 40.0°C)
• Communication Rate: Auto-detects 9.6k, 19.2k, 38.4k, or 76.8k bps
• PIR Sensing Coverage: Minimum 94 angular degrees up to a distance of 15 ft (4.6 m)
• Ambient Operating Conditions: 32°F to 104°F (0°C to 40°C); 10 to 90% RH, noncondensing
• Terminations: Screw terminal block supporting 18 to 22 AWG wire
• Compliance: UL Listed (US and Canada), CE Mark, RCM Compliant

Applications

• Commercial HVAC Systems: Ideal for automated environmental monitoring and zone control in commercial office buildings.
• Demand-Based Energy Management: Used in schools, dormitories, hospitality spaces, and hospitals to achieve energy reduction by setting back temperatures when spaces are unoccupied.
• Space Utilization Trending: Leverages the onboard PIR motion sensor to facilitate occupancy logging and space usage analysis.