OI-9900 WireFree Signal Repeater


The Gen II WireFree Repeater OI-9900 is a wireless device that receives messages from a sensor assembly and repeats the identical message to a receiver/monitor, allowing for greater distance between devices than with a sensor assembly/monitor setup alone.

The Repeater operates with 12-35 Volts DC, and is equipped with two antennas and two radios: Gen II 900 MHz or Gen II 2.4 GHz.

Part Number Formula: OI-9900-[Radio Frequency]


Part Number: N/A Categories: , Tags: ,



Operating Voltage: +12-35 Volts DC

Current Draw: 150mA at 24 Volts DC

Channels: 32 (receives transmissions from up to 32 devices)

Radio Options:

  • 2.4 GHz

  • 900 MHz, 200mW

Networks (Settable):

  • 1-78 (2.4 GHz)

  • 1-52 (900 MHz)

Operating Temperature:

  • -40° F to 129° F

  • -40° C to 54° C


  • PTC (automatic resettable)

  • Non end-user replaceable


  • Graphical LCD, transflective, sunlight readable

  • LED back-light, 102 x 64 resolution


  • Three push-buttons (MENU, ADD, SUB)

  • Three corresponding magnetic, non-intrusive switches

Enclosure: Otis-Blue explosion/flame-proof

Certifications: CSA certified, Class 1, Div I Groups C and D

Warranty: Hardware: One year (limited)


OI-9900 Repeater Data Sheet

OI-9900 Operation Manual


Your Details

Let us know how to get back to you.

How can we help?

Feel free to ask a question about the specific product.

Part NumberDescription
OI-9900-CB-PCAOI-9900 Control Board with LCD Screen Installed
OI-LCD-102LCD Screen with White LED Backlight
OI-9900-FP-KITOI-9900 Faceplate Kit with Faceplate, Label, (2) Thumbscrews, and Foam to Secure LCD Screen
OI-9900-RB-PCAOI-9900 Radio Board, No Radio Modules Installed
OI-RADIO-2.4-THGEN II 2.4 GHz Radio Module
OI-RADIO-900-LAIRDGEN II 900 MHz Radio Module
OI-432-UFL-4u.FL Cable for Connecting Radio Module to Board
OI-WF690-AF-NAntenna Fitting, Class 1, Div 1, N Female (Used on "-A" Model)
OI-AN-2.4-RIGID-R2.4 GHz Antenna, Non-Flexible, Right Angle
OI-AN-2.4-RIGID-S2.4 GHz Antenna, Non-Flexible, Straight
OI-AN-900-FLEX-R900 MHz Antenna, Flexible, Right Angle
OI-AN-900-FLEX-S900 MHz Antenna, Flexible, Straight
OI-420Otis Magnet
OI-402-5PACKPackage of 5 Desiccant Bags, 6 Grams per Bag
OI-495-OMain Enclosure O-Ring

Additional information

Radio Configuration

Gen II 900 MHz Radio, Gen II 2.4 GHz Radio

Featured Products

what we've got in store for you