Log In

Credit Cards Accepted

website security

SC33 Wireless External RTD Sensor

  US Prices 
CDN Prices

Privacy and Security Policy

The multichannel SC33 Wireless Sensor accepts inputs and provides signal conditioning for external RTDs. The unit can handle up to 2 inputs and has fully upgradeable firmware. Individual signal condition and configurations are available to accept 2, 3, 4 wire 100 ohm RTDs.

The SC33 with 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.




What's Included:

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


  • Secure reliable wireless transmission of RTD temperature data
  • Multichannel design with 2 RTD inputs
  • Accepts 2, 3, 4 wire 100 ohm RTDs 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, Model GW2 or GW3. Add sensors as needed with scalable system and gateways capable of handling hundreds of sensors at a single location

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

Compatable External Sensors:

Measurement External 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 Kit RTD-120SS-FRZKIT

Model Number SC33
Measurement Channels Temperature, 2 Channels
Sensor External RTD - 2,3 or 4 wire 100 ohms RTD
Measurement Range -200 to 800°C (-330 to 1475°F)
Units C, °F
Sample Rate 10 Hz to 32 Hrs
Sensor Response Time (90%) 1s
Resolution 0.01°C (0.02°F)
Calibrated Accuracy ±0.1°C (±0.2°F )
Digital I/O Channels N/A
Temporary Sensor Memory 1000 data points
Long -term Memory (using Gateway): Up to 120 billion data points
LED Indicator Green, power and programming indicator
Required Interface Package Gateway GW2, GW3, GW10, GW11, GW12
Wireless Data Security AES-256 Encryption
Radio Power 250mW
RF Carrier Frequency 902-928 MHz
RF Transmit Data Rate Auto-adjusting 32-196kbps
Hopping Channels 25
Modulation GFSK
Transmit Power 20dBm
Receiver Sensitivity -110dBm typical
Range (Line of sight) Up to 1700’ (0.3 Miles)
Range (Typical indoors) Up to 150'
Power Requirements Battery operated - Std 2 AAA
Typical Battery Life 7-10 years
Enclosure Material Ruggedized polycarbonate plastic
Upgradable Firmware Yes
Indoor/Outdoor Outdoor
Operating Environment -40~ 85°C (-40~ 185°F); 0~95%RH non-condensing using optional lithium batteries (supplied alkaline batteries -15~ 55°C)
Dimensions 70x45x22 (mm) (2.76" x 1.77" x 1.73")
Weight 5oz. with batteries
Approvals US(FCC), CA(IC)
Warranty One (1) year parts and service
Order Online:
USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027