Features 4 Gases to choose from: LEL, CO, H2S, or O2 Operates 3,000 hrs. on alkaline batteries (16 hours for LEL version) Pocket size 1.4”(W) x 4.1”(H) x 0.8”(D) Light weight 3.5 ounces Audible / visual / vibration alarms Special low temp H2S version operates at -40°C Automatic backlight during alarm Peak Hold, STEL & TWA Low battery alarm Impact and water resistant Intrinsically safe, CSA, C / US classified 2 year warranty Applications Hazardous Material Mining Refineries / Petrochemical Water / Wastewater Treatment Pharmaceuticals Utilities Chemical Plants Fire Services

Model Name	OX-01	CO-01	HS-01	HS-01S	GP-01
Gas Detected	Oxygen (O2)	Carbon Monoxide (CO)	Hydrogen Sulfide (H2S)		Combustible gas
Detection Principle	Galvanic cell	electrochemical			Catalytic combustion
Detection Range	0 – 40%vol. (0.1%vol.)	0 – 500 ppm (1 ppm)	0 – 100 ppm (0.5 ppm)		0 – 100% LEL (1% LEL Increments)
Alarm Set Points	Low 19.5%vol. High 23.5%vol. Over 40.0%vol.	1st 25 ppm 2nd 50 ppm TWA 25 ppm STEL 200 ppm Over 500 ppm	1st 10 ppm 2nd 30 ppm TWA 10 ppm STEL 15 ppm Over 100 ppm		1st alarm 10% LEL 2nd alarm 50% LEL Over alarm 100% LEL
Types of Alarms	Gas alarms: 1st and 2nd (user adjustable), OVER alarm, STEL and TWA Trouble alarms: Sensor connection, low battery circuit failure, and calibration range error
Alarm Indication	Gas alarm: Flashing LED's, intermittent buzzer, flashing gas value, and vibration Trouble alarm: Flashing LED's, intermittent buzzer, and display of error message STEL & TWA alarms: Flashing LED's, intermittent buzzer, flashing gas value, and vibration
Preset Alarms (User Adjustable)	Diffusion
Response Time	T90 in 30 seconds (alarms within 5 seconds when exposed to 12% O2)	T90 in 30 seconds
Accuracy	+/- 0.5%vol.	+/- 5 ppm (up to 150 ppm)	+/- 1.5 ppm (up to 30 ppm)		+/- 5% of full scale
Power	Alkaline dry cell (2-AAA size)				Alkaline dry cell Ni-Cad battery pack
Continuous Operation	Alkaline dry cell: more than 3,000 hours (at 25°C, no backlight)			1,500 hours at -40°C	Alkaline: 16 hours Ni-Cad: 8 hours
Safety	CSA classified, "C/US", as intrinsically safe. Class I, Div. 1. Group A, B, C & D
Dimension & Weight	1.4”W x 4.1”H x 0.8”D, (35 x 105 x 20mm); 3.5 ounces (100g)
Display	7-segment + symbol on digital LCD, auto backlighting during alarm
Special Functions	Manual backlight for LCD (automatically lit during alarm) Peak hold, STEL & TWA
Operating Temp. & Humidity	-4°F ~ 122°F (-20°C ~ 50°C); Humidity below 90% RH (non-condensing)			-40°F ~ 122°F (-40°C ~ 50°C); Humidity below 90% RH (non-condensing)	-4°F ~ 122°F (-20°C ~ 50°C); Humidity below 90% RH (non-condensing)
Standard Accessories	Rubber protective boots Belt clip or alligator clip Wrist strap Alkaline batteries
Optional Accessories	Calibration cap (adapter) Charger unit Calibration kit Ni-Cad battery pack
Warranty	Two years material and workmanship

OXYGEN DEFICIENCY AND TOXIC GAS DANGERS
An oxygen deficient environment is very dangerous! Even a brief exposure to an oxygen deficient environment can lead to unconsciousness or death. It is important to know the concentration of oxygen in your working area so that appropriate measures may be taken to ensure worker safety. Likewise, an environment where toxic gases are present, such as carbon monoxide or hydrogen sulfide, can also be very dangerous to health and life.
Note: Specifications subject to change without notice.