OI-7500 Explosion Proof Monitor with 3 Relays


The WireFree Gen II OI-7500-XP is an explosion-proof 32-Channel 3-relay wireless monitor specifically designed for use in conjunction with Otis Instruments, Inc. Gen II WireFree Sensor Assemblies.

Part Number Formula: OI-7500-[Power Supply]-XP-[Radio Frequency]





Supply Voltage: 12-35 VDC or 120/240 VAC

Current Draw 275mA at 24 VDC (monitor only); 6.6 Watts Max

Temperature: -30 to 70° C

Channels: 32 channels


  • Three dry-contact with 4 Amp fuses

  • Three individually configurable set-points

Radio Options: 2.4 GHz ISM, 100mW OR 900 MHz, 200mW

Power Connection: Phoenix-like screw terminal

RF Connection: Class I, Div. 1; External N Female connector

Enclosure: Explosion-proof Class I, Div. 1

Warranty: Hardware: One year (Limited)


OI-7500-XP Data Sheet

OI-7500 Operation Manual

Additional information



Radio Configuration

Gen II 900 MHz Radio, Gen II 2.4 GHz Radio

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