WRZ-THN0000-2 Johnson Controls Wireless Room Sensor

Overview

The Johnson Controls WRZ-THN0000-2 is a wireless room sensor designed to monitor and transmit zone temperature and relative humidity data within commercial building automation and HVAC systems. This wall-mounted unit eliminates the need for field wiring runs, reducing installation labor and complexity. It features a built-in manual occupancy override button and signal strength LEDs, communicating via direct-sequence spread-spectrum RF technology to building automation controllers or receivers.

Features

• Combines wireless temperature and relative humidity sensing in a single device
• Includes a manual occupancy override button for local room control
• Equipped with battery level and wireless signal strength indicator LEDs
• Utilizes direct-sequence spread-spectrum (DSSS) RF technology for reliable communication
• Offers flexible mounting configurations via screw mount or double-sided adhesive tape
• Compatible with Johnson Controls ZFR183x series wireless field bus systems

Specifications

• Power Requirements: 3 VDC provided by two 1.5 VDC AA alkaline batteries
• Battery Life: 36 months minimum, typically 48 months
• Relative Humidity Accuracy: +/-3% RH across the 20% to 80% RH range
• Humidity Calibrated Range: 10% to 90% RH at 73 degrees Fahrenheit (23 degrees Celsius)
• Wireless Frequency Band: 2.4 GHz Industrial, Scientific, and Medical (ISM) band
• Transmission Power: 10 mW maximum
• Transmission Interval: Temperature data sent every 60 seconds; humidity data sent every 2 minutes (or 1 minute if values change)
• Effective Transmission Range: 150 feet line-of-sight maximum, averaging 100 feet in typical interior spaces
• Enclosure Material: NEMA 1 white plastic housing

Applications

• Variable Air Volume (VAV) systems
• Fan coil unit monitoring and control
• Commercial office, retail, and institutional spaces
• Commercial HVAC zoning and room-level monitoring
• Building Automation Systems (BAS) and general energy management integration