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SC77 Wireless Low Range Differential Pressure Sensor

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The SC77 Low Range Differential Pressure Wireless Sensor can monitor a number of critical room environment applications including research and storage areas as well as hospital laboratories, operating, isolation and clean rooms. The SC77 precisely monitors the differential pressure between two rooms or air spaces down to 2.5 Pa (0.1 in H2O) across a range of /- 250 Pa ( /- 1 in H2O). The two nipple fittings on the case can be connected to the two airs paces using the included tubing, allowing the sensor to measure differential pressure between the two sources. Other typical differential pressure requirements are found in electronics production clean rooms, construction areas, air handlers, filtration systems and pitot tube sensors.



What's Included:

  • SC77 Low Range Differential Pressure Sensor
  • 2 AAA batteries (installed)
  • 2' (0.7m) of extra rubber tubing (5/32" OD)


  • Measures ± 0.036 psi (±250 Pa/ ±1 in H2O) differential pressure
  • Programmable individual sensor alarm set points and alarm notification via email or Text message with HaloCloud service
  • Available control outputs for audible and visual alarms
  • Low power design - Battery powered sensor provides installation location flexibility
  • Long 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
  • 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
  • Compliant to RoHS Directive 2002/95/EC

Application Examples:

  • Medical /Pharmaceutical process and storage areas
  • Hospital laboratories and operating, clean, isolation rooms
  • Environmental Data Acquisition and Research Studies
  • Filtration System Monitoring
  • Greenhouses
  • R&D
Model Number SC77
Measurement Channels Differential pressure
Sensor Internal differential pressure sensor
Measurement Range ±0.036 psi (±250 Pa/ ±1 "H2O)
Units psi, kPa, mbar, in H20
Sample Rate 10 Hz to 32 Hrs
Sensor Response Time (90%) Approx. 1s
Resolution 0.001 psi (6.9 Pa)
Calibrated Accuracy ±0.003 psi (±2.5 Pa/ ±0.1 "H2O)
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 (GWx series)
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 AC power or battery (std 2/3AA lithium)
Typical Battery Life 3 months
Enclosure Material Ruggedized polycarbonate plastic
Upgradable Firmware Yes
Indoor/Outdoor Indoor
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 6oz. with batteries
Approvals US(FCC), CA(IC)
Warranty One (1) year parts and service
Order Online:
Please call us for pricing
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