Our Products: The STCO-305

The STCO-305: Carbon Monoxide Detector

Battery Powered Carbon Monoxide Alarm

To guard against CO poisoning, we recommend that a CO Alarm on each level of the home; however, if there is only one alarm in the home, it should be located near the sleeping area.

  • Instant test/reset button
  • LCD digital display from 30 ppm to 500 ppm with 1 ppm resolution
  • 85dB piercing alarm at 10 feet
  • Easy wall hang installation
  • Accurate and long lasting electro-chemical sensor
  • Light weight and long operation hour
  • Operation light (LED) indication at intervals.
  • 5-year limited warranty
  • Self diagnostic circuitry
  • Shows previous height reading
  • Memory erase


Certified to
UL2034 2009
CSA 6.19-01
IAS 6-96 2nd Edition CO Alarm
Power Source
9VDC Battery: Duracell Alkaline MN1604 / Ultralife Lithium U9VL-J
Power Consumption
0.00016 Watt
Operating Temperature
32°F(0°C) to 120°F(49°C)
Battery Life (new
battery) for continuous

* One year for Alkaline battery
* About 5 years for Lithium battery
Alarm Sound Level
85 dB at 10 feet
Detection Frequency
Sampling every 2 minutes. Digital Read-out from 30 ppm to 500 ppm. LCD will flash if level exceeds 500 ppm.
CO Response Time
@   70 ppm 60 -- 240 mins.
@ 150 ppm 10 --   50 mins.
@ 400 ppm   4 --   15 mins.
Unit Weight
(with Battery)

240 gram (0.5 lb)

TEL:(905) 660-90661-800-203-7987
FAX:(905) 660-9261
E-mail: info@s-tech.ca
Website: www.s-tech.ca

Stech is ISO 9001 Compliant