6www.REEDINSTRUMENTS.comInstrument Description1. Sensor2. LCD Screen3. Data Hold Button4. MAX/Down Button5. Power Button6. Battery Cover7. Set Alarm Button8. Backlight Button9. Unit of Measure/Up ButtonDisplay Description1. Auto Power Off Indicator2. MAX Indicator3. Data Hold Indicator4. Beeper Off Indicator5. Unit Indicator6. High Alarm Indicator7. Unit Indicator8. Temperature Reading9. SET Alarm10. Alarm Indicator11. CO Reading12. Battery Capacity Indicator1 2 3456789101112R9400123456789www. .com information@itm.com1.800.561.8187