Beacon 200


The Beacon 200 is a powerful, low cost fixed system controller for two points of gas detection. It is microprocessor controlled, versatile, simple to install and operate, and priced to be the industry’s most economical two point controller. It is capable of connecting directly to RKI sensors for LEL level combustibles, Oxygen, Hydrogen Sulfide, or Carbon Monoxide. The Beacon 200 can also accept any 4-20 mA transmitter (2 or 3 wire, 24 VDC). Sensors can be mounted directly at the Beacon 200 housing, or can be wired remotely from the controller.

The 10 amp rated relays are strong enough to actuate most external alarms and horns without using slave relays. The digital display has backlighting and simultaneous readout of the gas type and concentration.

The Beacon 200’s housing is rated NEMA 4X for corrosion resistance and a weather tight seal, and complies with lock out / tag out standards. An external reset switch allows the alarm to be silenced from outside of the controller housing. The Beacon 200 comes complete with a wall mounting kit for easy installation.

RKI offers the industry’s widest selection of standard and toxic gas detection sensors, which can be utilized with the Beacon 200, providing gas monitoring protection for almost any application.


Simultaneous readout on 2 channels
Two alarm levels per channel
Discrete and common relays
NEMA 4X enclosure
4-20 mA outputs
Proven, long-life sensors for a wide variety of gases
Accepts any 4-20 mA transmitter input (24 VDC)
Easy to install, operate and expand


Petrochemical plants
Water & wastewater treatment plants
Pulp & paper mills
Gas, telephone, & electric utilities
Parking garages
Manufacturing facilities



General Specifications

DimensionsHeight: 10.5” (267 mm) x Width: 8.5” (216 mm) x Depth: 6.3” (158 mm)
EnclosureWall mounting grey polycarbonate with hinged cover
Conduit Connection3/4” NPT conduit hubs, 3 provided. 2 for sensor wiring and 1 for power & relay wiring
Wiring TerminationScrew type terminal block, 14 gauge max
Power115 VAC or 24 VDC standard, Optional 230 VAC. Battery backup option available
Controls4 internal push buttons for setup, programming, and calibration. 1 external push button for alarm reset
Operating Environment
Operating Temperature-4°F to 122°F (-20°C to 50°C)
Storage Temperature-4°F to 158°F (-20°C to 70°C)
Enclosure RatingNEMA-4X enclosure, waterproof, chemical, and weather resistant. Suitable for indoor and outdoor installations.
Direct Wired SensorsLEL, Oxygen, and toxic gas sensors. Remote amp required for greater than 500 feet
4-20 mA SensorsAccepts any 4-20 mA transmitter (24 VDC, 2 or 3 wire). A wide variety of RKI/Riken sensors are available with 4-20 mA signals; (See list of detectable gases.) Wiring distances up to 5,000 feet
Sampling MethodsAccepts diffusion or sample draw heads
Relays7 relays - 10 amp rating (at 115 VAC), SPDT isolated contacts. 2 relays for gas alarm levels per channel, plus 2 relays for common gas alarm and 1 common relay for malfunction. Relays fully programmable for: increasing or decreasing alarm, latching or self reset, normally energized or normally de-energized, time delay for alarm on and alarm off
4-20 mASignal output, 4-20 mA (into 1,000 ohms impedance maximum), per channel
24 VDC24 VDC (350 mA max) output provided to operate sample drawing adapters
DisplayAlphanumeric display with backlighting. 20 characters per line; 4 lines each
AudibleBuilt-in audible alarm, 94 dB, mounted on enclosure Coded output: pulsing = gas alarm, steady = fail
Visual4 LED’s on the front cover for alarm status indication, pilot, and malfunction
Approvals and Warranty
ApprovalsCSA Certified to CSA C22.2 No. 1010 and ANSI/ISA S82.01
WarrantyOne year material and workmanship

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