Otis Instruments OI-6940-X-X-NXP Quad Sensor Assembly

Availability: In stock
Sensor TypeElectrochemical, Photo Ionization Detector, Low-Power Infrared Sensor
Power TypeAC Power Supply with Integrated 3.6VDC/76Ah Backup Battery Pack
RF ConnectionExternal N-Female Radio Frequency (RF) Connector, Flexible Antenna Included
Display Screen
  • 160x104 Resolution Graphical LCD Screen,
  • Transflective (Sunlight Readable) with LED Backlight


  • 4 Push-Buttons (MENU, ADD, SUB, BACK),
  • 4 Magnetic Non-Intrusive Switches for Calibration (MENU, ADD, SUB, BACK)
Customizable SettingsAdjustable Background Gas Setting (1% to 10% of Full Scale) Settable per Sensor Element
Tamb Temperature Range-40°C to +70°C
WireFree Radio OptionsGEN II 900 MHz (200 mW) Radio or GEN II 2.4 GHz (125 mW) Radio
  • 52 Networks (GEN II 900 MHz Radio) or 78 Networks (GEN II 2.4 GHz Radio),
  • 255 Addresses per Network
Product Dimensions5 in. D x 10.5 in. W x 20 in. H (Max. Dimensions w/ Attachments)
Enclosure MaterialNEMA Class I, 4, 4X and 6 Fiberglass Enclosure with Clear Lid - IP 66, UL 508 and UL 746C (f1) Rated
Hardware WarrantyLimited one year
Sensor Element WarrantyVaries with Sensor Element and is Subject to Otis Verification
Part Number Formula
  • 01-6940-[Number of Sensors]-[Radio]-NXP
  • 01-6940-X-X-NXP
Optional Remote Sensor Kit

01-501-7-NXP-Remote Sensor Kit, Part Number-01-501-7-NXP-[Gas Type],

  • Electrochemical Sensor—Up to 250 Feet of Cable
  • Low Power Infrared Sensor-Up to 40 Feet of Cable
  • Photo Ionization Detector - Up to 35 Feet of Cable

The Otis Instruments Wireless OI-6940 Non-Explosion Proof AC-Powered Ambient Air Multi-Gas Detector simultaneously uses up to four sensor elements to detect an array of gases. The Assembly reports once a minute, however the reporting rate will increase to once every five seconds when the detect gas is above the Background Gas Set-Point. Operates from an AC power supply with an internal backup battery pack. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnotics.


  • Electrochemical, PID or Low-PowerInfrared Sensor
  • AC Powered with Integrated Backup Battery Pack
  • Graphical LCD with LED Backlight
  • 4 Push-Button Interface (ADD, MENU, SUB, BACK) with 4 Corresponding Magnetic, Non-Intrusive Switches
  • Wireless (Wireless) Communication
  • Adjustable Background Gas Setting per Sensor
  • Radio Options: Available with GEN II 900 MHz or GEN II 2.4 GHz Radio
  • 1-Year Limited Hardware Warranty
  • Sensor Element Warranty Subject to Otis Verification
  • Optional OI-501-7-NXP Remote Sensor Mounting Kit

​Please refer to datasheet for more information

Technical Data-Sheet