Otis Instruments OI-7530-X-X-I Wireless Monitor-Relayer

Availability: In stock
Product Type32 Channel Gas Relayer
Power TypeWireFree Power
Operating Voltage12V to 35V DC or 120V AC
Current Draw275 mA Maximum
Power Supply3.13A (75W), 85/264V AC to 24V DC (Optional)
RF ConnectionExternal N-Female Radio Frequency (RF) Connector
Customizable Settings3 Individually-Configurable Alarm Set-Points Per Channel
Option to Disable Alarm Relays
Latching and Non-Latching Relay Settings
Display Screen128×64 Resolution Graphical LCD Screen
Transflective (Sunlight Readable) with LED Backlight
Interface3 Push-Buttons (MENU, ADD and SUB)
Tamb Temperature Range-40°C to +70°C
WireFree (Digital) InputUp to 32 GEN II WireFree (Digital) Sensor Inputs
Relays3 Dry-Contact Relays with 4 Amp Replaceable Fuses
Fault Terminal
ProtectionPower Electromagnetic Interference (EMI) Filter
WireFree Radio OptionsGEN II 900 MHz Radio or GEN II 2.4 GHz Radio
Product CompatibilityGEN II WireFree Sensors (01-6000, 01-6900, 01-6940)
GEN II WireFree Transmitters (01-5900, 01-5950)
Networks52 Networks (GEN II 900 MHz Radio)
78 Networks (GEN 11 2.4 GHz Radio)
255 Addresses per Network
Enclosure MaterialNEMA 4X Fiberglass Device Enclosure with Clear Lid
Product Dimensions9 in. L x 9 in. W x 5 in. H (Max. Dimensions with Attachments)
Total Weight6.8 lbs.
Hardware Warranty1-Year, Limited
Part Number Formula0I-7530-[Radio]-[Power Supply]-I

The Otis Instruments 01-7530 Relayer is a 32-Channel Gas Alarm System with 3 Relays that can monitor up to 32 GEN II WireFree Gas Detectors simultaneously. Three relays can be configured to activate up to the full scale reading reported and set to be either latching or non-latching. Housed in a NEMA 4X non-explosion proof enclosure allows for quick, easy installation while maintaining a high level of ruggedness for safety.


  • 32 Channel GEN II WireFree Relayer
  • 12 to 35 VDC Operating Voltage with an Optional AC Power Supply
  • Operating Temperature Range of -40°C to +70°C
  • Graphical LCD with LED Backlight
  • 3 Push-Button Interface (ADD, MENU, SUB) with 3 Corresponding Magnetic, Non-Intrusive Switches
  • Radio Options: GEN 11 900 MHz or GEN II 2.4 GHz Radio
  • Output Options: Wet Contact DC Fault Terminal, Relay 3 Can Optionally Be Configured as a Fault Relay
  • NEMA 4X Fiberglass Non-Explosion Proof Enclosure with Clear Lid
  • 3 Individually Configurable Alarm Set-Points: Three Front Panel ALARM LED Indicators (Red); 3 Dry Contact Relays (4 Amps Maximum per Relay)
  • 1-Year Limited Hardware Warranty

Please refer to datasheet for more information