Custom Solutions Based on Our Wireless Active Sensors icon-custom-40-pix icon-battery-40-pix



Advantages of Custom Wireless Active Sensors

  • Several sensor technology platforms available – your custom sensor is an adaptation of a proven design.
  • Available in a wide variety of sizes and shapes. See examples below.
  • Multiple radio frequencies available including 433 MHz, 868 MHz, 915 MHz, and 2.4 GHz.
  • Battery life of many years make these sensors Practically Battery Free™.
  • “Tethered temperature sensors” allow the measurement of extreme temperatures.
  • Sensor transmissions include sensor ID and time stamp.
  • Long read ranges up to 1500 feet.
  • A wide variety of receiver connectivity including:  USB, Ethernet, WiFi, RS232, Iridium satellite modem, and others.
  • Ideal for harsh environments.
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Questions about Phase IV Engineering's RFID & wireless sensor technology? Need a quote for a specialized wireless sensor solution? Talk to one of our wireless sensing experts today.
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Looking for an off-the-shelf active sensor that’s ready to go?  See our Phase IV Wireless Sensor Network (WSN) product family.

Examples of Custom Wireless Active Sensors

“HEATT” Active 915 MHz Frequency-Hopping Sensor Network

  • This Phase IV long-range, long-life active sensors was custom-developed to monitor substation equipment for over-heating conditions.
  • Long Range – 1500+ feet transmission range.
  • Long Battery life – 5 to 10 years when transmitting every 15 minutes.
  • Frequency hopping makes the transmissions more immune to radio interference.
  • 915 / 868 MHz band.
  • Receiver Connectivity:  USB or Iridium satellite modem.
  • Multiple sensor inputs and types are supported including thermocouple and pressure.
  • More details on our Data Sheet

Temperature and Humidity Skin Patch Wireless Sensor

  • Ultra small and thin – 1 inch in diameter.
  • Flexible – flex-circuit board.
  • Dual Temperature Sensors – on top or bottom of patch.
  • Humidity + Temperature version.
  • High Accuracy of 0.2°F.
  • Medium range – 20 to 50 feet.
  • Battery life of a few months when transmitting every 10 minutes.
  • USB or WiFi receiver. 

Miniature 433 MHz Wireless Sensor System



Ideal for medium range sensor transmissions when a small, custom sensor is required. Available with USB or WiFi receiver. Transmission range of ~300 feet in open air.

More details on our Data Sheet.

Electrical Power Distribution Wireless Sensors



Monitor power lines, switch gear, lighting arresters, transformers, and other equipment. Equipment typically heats-up for several months before it fails. Temperature sensors give ample warning to schedule maintenance and avoid an unplanned outage. Long battery life makes these sensors Practically Battery Free™ .

High Sampling Rate (10+ Hz) 2.4 GHz Wireless Sensor System – Coming Soon



This sensor system is ideal when high sampling rates are required. Temperature, pressure, strain, vibration, and more.


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Why use Phase IV Engineering for your custom sensor design? Find out how we leverage 20+ years of experience to help you solve your toughest sensing problems.