CO  Monitor
CO  Detectors

Pro-Tech 7035-SL Lithium Powered CO Alarm w/Digital Display and Secure-Lock

    Model 7035-SL

  • Lithium Battery Powered 
  • Digital LCD Display
  • Peak Level Memory
  • Peak Level Time Record
  • Electrochemical Sensor
  • Sensor Life Monitor
  • Tamper-Resistant
  • ANSI/UL 2034-05 Listed
  • CSA and IAS Certified
  • NFPA 720 Compliant
  • Five Year Warranty
List Price - $77.95 ea.
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UltraLife 5 Year Lithium Battery
Five Year
Lithium Battery


The New PROTECH 7035-SL Lithium Battery Powered Carbon Monoxide (CO)  Detector includes an electrochemical sensor with life monitor, digital display with memory, factory preinstalled battery with activation tab, tamper-resistant battery compartment, and secure mounting features.

Carbon monoxide levels are measured and recorded by a state-of-the-art electrochemical sensor. When a chronic carbon monoxide level of 70 ppm or more is detected, a flashing Red LED and 85db pulsating alarm are activated, and the carbon monoxide level is alpha-numerically displayed up to 500 ppm.

Pressing the reset button temporarily mutes the audible signal while the carbon monoxide level is rechecked. If carbon monoxide remains at 70 ppm or higher, the visual and audible alarm signals are automatically reactivated. After ventilation, the LED is auto-reset to a flashing Green (power on), the audible signal is silenced, and detection restarts. 

The current and peak carbon monoxide level detected (from 10 to 500 ppm), peak time duration, and COHb calculation can be displayed by pressing the test/reset button. An internal clock monitors the sensor life and activates visual and audible expiration signals at five years.

A long-life lithium battery is factory preinstalled within a compartment locked with tamper-resistant screw. An activation tab protects battery during shipment and storage. Just pull out tab to begin operation. No need to insert, replace or service battery, which is factory guaranteed to last life of detector.

Secure-Lock mounting system includes a mounting plate which fastens to wall at eye level. ProTech detector slides down onto mounting plate and is secured by an integral restraining flange. Deters tampering with installation.

The ProTech 7035-SL CO Detector is engineered and manufactured under an ISO 9001 Quality Management System for improved product quality, reliability, and customer confidence. Backed by a five year limited factory warranty.


  • Lithium Battery Powered:  The ProTech 7035-SL CO Detector includes a five-year UltraLife 9vDC Lithium Battery.
  • Digital Display:  Carbon monoxide levels detected between 30 to 500 ppm are automatically displayed when alarm is activated. The LCD readout flashes above 500ppm.
  • Current CO Display:  The current carbon monoxide level detected can be displayed from 10 to 500 ppm.
  • Peak Level Memory:  Recalls from memory the highest carbon monoxide level detected from 10 to 500ppm.
  • Peak Level Time Record:  The duration of the stored peak carbon monoxide level can be displayed by pressing the test/reset button.
  • COHb Calculation:  Displays an estimate of the amount of carbon monoxide which is potentially bound to hemoglobin.
  • Tamper-Resistant Battery Compartment:  Lithium battery is factory preinstalled behind door locked with tamper-resistant screw.
  • Activation Tab:  Brightly colored tab protects battery from activation during shipment or storage. Just pull out tab to begin operation.
  • Secure-Lock Mounting System:  Integral restraining flange secures detector to mounting plate to deter tampering with installation.
  • Electrochemical Sensor:  State-of-the-art electrochemical sensor is exceptionally reliable and accurate, with an estimated 5 year life expectancy.
  • Sensor Life Monitor:  Internal clock starts once lithium battery is activated.  Visual and audible signals notify you when sensor life has expired.
  • UL 2034-05 Listed:  ProTech CO detectors are Underwriters Laboratories tested and listed to ANSI/UL 2034-2005.
  • CSA & IAS Certified:  The ProTech 7035-SL Lithium Powered CO Detector is also Certified to CSA 6.19-01 and IAS 6-96-2nd Edition, carries the Blue Star and Blue Flame approvals, and includes Lifetime Reliability Testing.
  • Complies with NFPA 720-05:  Meets the National Fire Protection Association's Recommended Practice for the Installation of Household Carbon Monoxide (CO) Warning Equipment.
  • ISO 9001 Quality Management System:  Manufactured under an internationally recognized, rigorous framework for enhancing product quality, reliability, and customer confidence.
  • Five Year Warranty:  The ProTech 7035-SL CO Detector and Lithium Battery are backed by a Five Year Limited Factory Warranty.


Secure-Lock Mounting





Activation Tab


Installed View

Hidden Battery Compartment

Pull Tab To Activate Battery

Locked Battery Door


  • Power Supply:  Factory preinstalled 9vDC Lithium battery
  • Tamper-Resistant Battery:  Locked battery compartment
  • Battery Activation Tab:  Pulls out to begin operation
  • Secure-Lock:  Integral restraining flange secures detector
  • Sensor:  Electrochemical
  • Gas Detected:  Carbon Monoxide (CO)
  • CO Sampling Cycle:  Every 2 minutes
  • Digital Display:  LCD alpha-numeric CO readout 30-500ppm during alarm
  • Current CO Reading:  Displays current CO level from 10-500ppm
  • Peak Level Memory:  Recalls highest CO detected from 10-500ppm
  • Peak Level Time Record:  Displays duration of peak CO level
  • Display Tolerance @ 10-30ppm ±15ppm, 50% RH, 22°C±3°C upright
  • Display Tolerance @ 30-500ppm ±35%, 50% RH, 22°C±3°C upright
  • COHb Display:  Calculates COHb equivalent from 0.0%-99.9%
  • Life Monitor:  Sensor expiration signal @ five years
  • Power Signal:  Flashing Green LED
  • Audible Signal:  85db @ 10ft
  • Chronic Alarm Time:  40-70ppm / 60-240 minutes
  • Acute Alarm Time:  400ppm / 4-15 minutes
  • Alarm Visual Signal:  Flashing Red LED
  • Alarm Audible Signal:  4 beeps every 6 seconds
  • Low Battery Visual Signal:  Flashing Green LED
  • Low Battery Audible Signal:  1 beep per minute
  • Malfunction Visual Signal:  Flashing Red LED
  • Malfunction Audible Signal:  1 beep per minute
  • Operating Temperature:  40°F to 100°F
  • Case Color:  White
  • Case Size:  6½” x 3¾” x 1¾”
  • Applicable Standards:  ANSI/UL 2034-05,
    CSA 6.19-01, IAS 6-96 2nd Ed., NFPA 720-05
  • Test Laboratory:  Underwriter’s Laboratories
  • Warranty:  Five Year Limited Factory Warranty

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