DIRECT CONNECT SENSORS — Available gases include ◦ LEL, H2S, CO, & CO2 Explosion Proof LEL Explosion Proof O2 / H2S / CO ◦ Toxic sensors include NH3, AsH3, HCN, PH3, and SO2 — Infrared sensor for combustibles and CO2 — Patented water repellent sensor coating — Explosion proof construction — Optional stainless steel junction box Explosion Proof IR LEL & CO2 The RKI Direct Connect series gas sensors are highly reliable and very cost effective for the detection of common gas hazards. The direct connect series are available for LEL, H2 Specific LEL, LEL IR, Oxygen, H2S, CO, CO2, and for a variety of toxic gases. The sensors for LEL, H2, Oxygen, H2S, CO2, and Carbon Monoxide are explosion-proof with flame arrestors, and approved for use in hazardous areas (Class 1, Div. 1 Groups B, C, D). An optional non-explosion proof version is available for oxygen, H2S, CO, and CO2 for use in non-hazardous atmospheres. The Direct Connect sensors can be used in two different ways. The sensors can be mounted directly to the controllers as a complete stand alone system, or they can be mounted to explosion proof junction boxes for remote detection. The toxic sensors are electrochemical type plug-in sensors, which provide high specificity, fast response, and long life. The plug-in design allows quick replacement in the field with no tools required. Toxic sensors are designed for use in Class I, Div. 2 hazardous locations. Sensors are available for NH3, SO2, PH3, AsH3, and HCN. The Direct Connect sensors can be used either indoors or outdoors. The flame arrestors for the explosion-proof versions utilize a patented coating which make them water repellent. Also, splash guards are available for use in very wet environments. An optional stainless steel junction box is available for corrosive environments. All of the Direct Connect sensors are designed to specifically interface with RKI Beacon 110, 200, and 410 controllers. World Leader In Gas Detection & Sensor Technology RKI Instruments, Inc. | 33248 Central Ave. Union City, CA 94587 | Phone (800) 754-5165 | (510) 441-5656 | Fax (510) 441-5650 www.rkiinstruments.com

General Purpose Sensor With J-Box Hydrogen Sulfide Catalytic Sensor Only Carbon Monoxide Lower Detectable Limit (LDL) Accuracy Life Carbon Dioxide Measuring Range +/- 5% of full scale (0.5% volume for oxygen) 2 to 3 years with normal service 3 to 5 years with normal service 2 to 3 years with normal service 5 years plus with normal service Operating Environment Location Indoor or outdoor. Explosion proof for Class I, Groups B, C, and D atmospheres. -40°F to 167°F -40°C to 75°C Housing Housing J-Box Cast aluminum, explosion-proof, optional stainless steel J-box available Stainless steel, explosion-proof...

Non Explosion Proof Oxygen Sensor With J-Box Hydrogen Sulfide Carbon Monoxide Galvanic cell Sensor Only Measuring Range Lower Detectable Limit (LDL) Accuracy Life Expectancy +/- 5% of full scale (0.5% volume for oxygen) 2 years with normal service 5 years plus with normal service 2 to 3 years with normal service Operating Environment Location Indoor or outdoor, Class I, Div. 2 -4°F to 122°F -20°C to 50°C Temperature Humidity Housing Housing J-Box Cast aluminum, explosion-proof Stainless steel, explosion-proof Compatible with the following controllers: Beacon 110, Beacon 200, and Beacon 410 One...

DIRECT CONNECT SENSORS A Available Accessories A. Calibration adaptors B. Flow through adaptors C. Remote horns & lights G. Air aspirator adaptors / panels Direct Interface with Beacon 110 / 200 / 410 Controllers Direct Connect Wiring Matrix Number of Wires to Controller Maximum Distance to Controller 18 AWG wire min. Made in the USA Authorized Distributor: