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SC33 Wireless RTD Sensor

In-situ Temperature

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Price: $179.00
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The SC33 wireless RTD sensor accepts one external RTD/ Pt100 probe and provides built-in signal conditioning. The unit can handle a single input 3-wire Pt100 (100 ohm) probe and has fully upgradeable firmware.

The SC33 Wireless RTD temperature sensors are used in a broad range of industrial process applications in the automotive, food handling and processing, medical/pharmaceutical, petrochemical and agricultural industries among others. Typical applications include monitoring temperature in refrigeration, oven or furnace environment, HVAC, high temperature and a broad range of additional industrial process monitoring and verification.

Remote email or text (SMS) alarms can also be enabled with our HaloCloud service.

User manual

What's included

  • SC33 wireless RTD sensor
  • 2 AAA batteries (installed)


  • Secure reliable wireless transmission of RTD temperature data
  • Accepts a 3-wire Pt100 (100 ohm) RTD and provides individual channel signal conditioning
  • Low power design - Battery powered sensor provides installation location flexibility
  • Unmatched battery life expectancy – 7-10 years
  • Compact size convenient for easy installation
  • Industry leading data storage – up to 120 Billion points
  • Powerful DataRecorder software included to chart, log, monitor all individual sensors
  • HaloCloud service for access to remote sensor data and configuration from anywhere including from Tablets, Smart Phones, Remote PCs
  • Programmable individual sensor alarm set points and alarm notification via email or Text message with HaloCloud service
  • Complete setup requires one System Gateway (GWx series). Add sensors as needed with scalable system and gateways capable of handling hundreds of sensors at a single location

Compatable external sensors

MeasurementExternal sensor
3 wire - Epoxy Encapsulation, Range -40 to 230C, Cable 36"RTD-36E
3 wire - 12" Metal Probe, Range -40 to 230C, Cable 40"RTD-48M
3 wire - Stainless Steel Probe, Range -50 to 200C, Cable 120"RTD-120SS
3 wire - Stainless Steel Probe, Range -50 to 200C, Cable 120", Glycol Bottle KitRTD-120SS-FRZKIT

Application Examples

  • Food Storage Facilities
  • Refrigeration Systems
  • Ovens and Furnaces
  • Warehouse Facilities
  • HVAC Systems
  • Industrial Process Monitoring
  • Buildings and Facilities management
  • Environmental Data Acquisition and Studies
  • Automotive
  • Medical /Pharmaceutical
  • Broad range of process monitoring and verification with Thermistors


Model NumberSC33
Measurement ChannelsTemperature
SensorExternal RTD - 3 wire Pt100 (100 ohms) RTD
Measurement Range-200 to 800°C (-330 to 1475°F)
UnitsC, °F
Sample Rate10 Hz to 32 Hrs
Sensor Response Time (90%)1s
Resolution0.01°C (0.02°F)
Calibrated Accuracy±0.1°C (±0.2°F )
Digital I/O ChannelsN/A
Temporary Sensor Memory1000 data points
Long -term Memory (using Gateway):Up to 120 billion data points
LED IndicatorGreen, power and programming indicator
Required Interface PackageGateway (GWx series)
Wireless Data SecurityAES-256 Encryption
Radio Power250mW
RF Carrier Frequency902-928 MHz
RF Transmit Data RateAuto-adjusting 32-196kbps
Hopping Channels25
Transmit Power+20dBm
Receiver Sensitivity-110dBm typical
Range (Line of sight)Up to 1700’ (0.3 Miles)
Range (Typical indoors)Up to 150'
Power RequirementsBattery operated - Std 2 AAA
Typical Battery Life7-10 years
Enclosure MaterialRuggedized polycarbonate plastic
Upgradable FirmwareYes
Operating Environment-40~+85°C (-40~+185°F); 0~95%RH non-condensing using optional lithium batteries (supplied alkaline batteries -15~+55°C)
Dimensions70x45x22 (mm) (2.76" x 1.77" x 1.73")
Weight5oz. with batteries
ApprovalsUS(FCC), CA(IC)
WarrantyOne (1) year parts and service