The vertical wallbox-mounted or surface-mounted NS Series Network Sensor with LCD is an electronic zone sensor designed to function directly with Johnson Controls® BACnet® Master-Slave/Token-Passing (MS/TP) digital controllers in HVAC systems. Models in this series monitor the temperature setpoint, zone temperature, and humidity, and transmit this data to a field controller on the Sensor Actuator (SA) Bus.
All models except the NS-BTF Series feature either a temperature setpoint adjustment dial or setpoint adjustment buttons. They also feature a °F/°C pushbutton and an LCD designed to make adjusting the temperature setpoint and viewing the zone temperature easier. A warmer/cooler dial is included on NS-BTF Series models for minor temperature adjustments from the setpoint.
Some models also allow occupants to view the Relative Humidity (RH) of the zone; these models include a pushbutton to toggle between temperature and RH on the display. These models also have the capability to set the default display to either temperature or RH.
A °F/°C pushbutton is available on all models to provide temperature scale options for display. A fan mode pushbutton is also included on some models to select the desired fan speed (AUTO-OFF-low-medium-high). An occupancy override function is featured on all models, which allows you to signal the controller that the space is occupied, to request an override of time-of-day scheduling. Rotating the setpoint dial or pressing either setpoint adjustment button signals occupancy. See Temperature Setpoint Adjustment/Occupancy Override for more information.
Select models in this series also provide Variable Air Volume (VAV) balancing functionality. These models look like and perform similarly to the other network sensors but have the added capability of serving as a tool to balance a VAV box.
Depending on the model chosen, you can terminate the wires connecting the network sensor to the controller using either a modular jack or screw terminal block, offering wiring flexibility.
All models include an SA Bus access port for connecting accessories to access the SA Bus. This feature allows a technician to commission or service the controller through the network sensor.