The ET110 from Klein Tools is an easy-to-use meter that detects and measures concentration levels of carbon monoxide (ppm) and temperature (Fahrenheit/Celsius), making it the perfect choice for HVAC professionals. Features backlit LCD screen, warning indicator light, audible and visual alarms and multiple function buttons.
Features:
Easy to use meter detects and measures concentration levels of carbon monoxide gas
User protection with short-term exposure limit (STEL) alarm
Low level alarm (35 ppm) and high level alarm (200 ppm)
Audible and visual alarms
Backlit display with CO measurements (0 to 1000 ppm) and temperature (°F/°C )
Auto-power off after 20 minutes of no usage helps conserve battery life
Includes carrying pouch and 4xAAA batteries
Meter is NOT intended for use as personal protection equipment
Specifications:
Batteries: 4xAAA
Auto-Power Off: Yes
Backlit: Yes
Display: LCD
Temperature: F/C
Included Accessories: Batteries, Pouch
Audible Alert: Yes
Visual Notification: Yes
Weight: 5.1 oz. (144.2 g)
Height: 7-3/4" (196.9 mm)
Width: 2-5/32" (54.8 mm)
Overall Length: 1-29/64" (36.9 mm)
Klein Tool's ET110 Instruction Manual
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Carbon Monoxide tester 
