Otis Instruments OI-5900-X-X-O Wireless Signal State Transmitter

Availability: In stock
Product Type4-20 mA Signal Transmitter
Power TypeWired Powered
Operating Voltage12V to 35V DC
Current Draw

<175 mA Maximum

(Varies w/ Sensor Connectivity)

RF ConnectionExternal N-Female Radio Frequency (RF) Connector
ProtectionPower Electromagnetic Interference (EMI) Filter
Display Screen102×64 Resolution Graphical LCD Screen, Transflective (Sunlight Readable) with LED Backlight

3 Push-Buttons (MENU, ADD, and SUB),

3 Magnetic Non-Intrusive Switches for Calibration (MENU, ADD, and SUB)

Customizable Settings

Transmits a 4-20mA signal or scale up to 30,000

Adjustable Communication Transmission on Change Setting

Temperature Range-40°C to +54°C
Wired (Analog) Input1 (Maximum) 4-20 mA Wired Sensor
Product Compatibility

GEN II Wired Sensors (01-675, 01-6000, 01-6000K),

GEN II WireFree Meter (01-9100), GEN II WireFree Repeater (01-9900),

GEN II WireFree Monitors (01-7010, 01-7032, 01-7500, 01-7543, 01-9850),

3rd Party Wired (Analog) Sensors

WireFree Radio OptionsGEN II 900 MHz Radio or GEN II 2.4 GHz Radio

52 Networks (GEN II 900 MHz Radio) or 78 Networks (GEN II 2.4 GHz Radio),

255 Addresses per Network

Enclosure MaterialAluminum Device Enclosure
Product Dimensions5.42 in. L x 6.03 in. W x 12.16 in. H (Max. Dimensions w/ Attachments)
Total Weight4.8 lbs.
Product CertifiedQPS Product Certified
Hazardous Location Certifications and ApprovalsATEX Models w/out Radio Option: # 112G Ex db mb IIB T6 Gb Ta= -40°C to +54°C, Models w/out Antenna Fitting: Ex do mb IIB T6 G0 40°C ≤ Ta ≤ +54°C, CSA Class I, Division 1, Groups C & D: Ex d IIB T6 Gb Class I, Zone 1, AEx db IIB T6 Gb Tamb -40°C to +54°C
Hardware Warranty1-Year, Limited
Part Number Formula




The Otis Instruments OI-5900 is a Wireless Explosion Proof 4-20 mA Transmitter. The OI-5900 makes any sensor into a Wireless sensor, including gas, flame, tank level and many other sensor types. Operates from 12 to 35 Volts DC and has a full range scale of up to 30,000. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.


  • Signal Transmitter
  • WireFree (Wireless) Communication
  • Wired Powered
  • Operating Voltage: 12V to 35V
  • External N-Female Radio Frequency (RF) Connector
  • 3 Push-Button Interface (ADD,
  • Radio Options: 900 MHz Radio (52 Networks) or 2.4 GHz Radio (78Networks)
  • 102x64 Resolution Graphical LCD
  • Aluminum Device Enclosure Screen; Transflective (sunlight Readable) with LED Backlight
  • QPS Product Certified
  • Transmits a 4-20 mA Signal or Scaled
  • Connectivity With Any 4-20 mA Sensor
  • 1-Year Limited Hardware Warranty Value Up to 30,000

Please refer to datasheet for more information

Technical Data-Sheet