OI-9850 The Interface


Engineered to accommodate the time-tested WireFree product line of Otis Instruments, Inc., the Interface OI-9850 is a 255 channel receiver that works collectively with Otis Gen I and Gen II WireFree Sensor Assemblies and a PLC, PC or other compatible Monitor.

The OI-9850 features a 128×64 graphical LCD with green backlight. The device operates with 120/240 Volts AC or 12-35 Volts DC (250mA) power-in, features RS-485 and RS-232 RTU Modbus Output, and offers 0, 8, 16, 24, or 32 channels of 4-20mA output.

Part Number Formula: OI-9850-[Power Supply]-[Radio Frequency]-A4-[4-20 Output Channels]

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Operating Voltage: 12V to 35V DC or 120V AC

Protection: Power EMI filter, surge suppression, 4-20mA and RS-485 surge suppression

Compatibility: Otis WireFree sensor assemblies

Radio Options: One Legacy radio: 900 MHz, 100mW and/or one Gen II radio: 2.4 GHz ISM, 100mW OR 900 MHz, 200mW

Operating Temp: -20 to 60° C • Fuses: PTC (Automatic Reset); Manufacturer Replace

Channels: 255 WireFree • Output: RS-485 & RS-232 Modbus, 4-20mA (optional), Virtual COM port over USB, Ethernet-to-website (real-time values)

Enclosure: Stahlin 10” x 8” x 6”; fiberglass w/ clear window

Display: Graphical LCD (128 x 64), sunlight readable, LED backlight

Certification: CAN/CSA-C22.2 No. 61010-1-12; UL Std. No. 61010-1 (3rd Edition) NEMA 4 (enclosure only)

Warranty: 1 year (limited)

Power: AC, DC

Radio Configuration: Gen II 900 MHz Radio, Gen II 2.4 GHz Radio

4-20 Output Channels: X, 8, 16, 24, 32

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