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Enclosure Powder coated aluminum
Weight 1.94lb (0.88kg)
Dimensions 6.77in x 4.06in x 2.17in (172mm x 103mm x 55mm)
Communication Modbus TCP & RTU (RS-485)
User Interface 5” Touch Display, remote web browser, desktop app, MQTT API
Operating environment Clean, dry, no extreme temperatures. (Typical control room environment)
Measuring rate Configurable
Data storage 8GB
Power input 5VDC
Alarm Sound and email alarms; SMS (text message) notification
Integration Configurable I/O for any compatible sensors/actuator via Modbus, configurable control algorithm (PID, ON/OFF, Open-Loop)


Principle of Operation Electrochemical
Accuracy ±2% of reading ±1 least significant digit
Enclosure Powder coated aluminum, rated to IP68
Weight 2.16lb (0.98kg)
Dimensions 6.77in x 4.06in x 2.17in (172mm x 103mm x 55mm)
Communication Modbus TCP & RTU (RS-485), slave-only
Operating environment 32°F – 122°F (0°C – 50°C), non-condensing
Measuring rate Continuous
Power input 12VDC


Accusafe I-901 Controller Manual 06.03.24 (1).docx
AccuSafe I-901 Sensor Manual 06.03.24 (1).docx


Most sensors should be replaced every 3 months. This assumes proper maintenance and infrequent exposure to concentrations above the intended measuring range of the instrument. If your sensor is exposed to high concentrations of a gas, a replacement is recommended.

If your system uses the Interchange Sensor System, send the used cartridge back to us and we will recycle it.

Yes. We do this to serve you better and more efficiently. Please request an RMA form here.

Most orders for sensors and parts can be shipped within the week. If you have a rush, please notify us!

Our gas detectors come with a standard 1-year warranty, covering manufacturing defects and providing peace of mind for our customers.

Yes, our gas detectors meet or exceed industry standards and regulations for safety and performance, including those set by OSHA, ANSI, and other relevant organizations.

Interscan gas detection devices are designed for ease of use and minimal maintenance. The primary maintenance tasks are regular sensor replacements and battery checks. Additionally, it is important to keep the equipment clean and ensure it is operating correctly. Adhering to the manufacturer’s maintenance schedule is essential for consistent and reliable performance.


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