SKU: WG01-SST1-M-36

WatchGas SST1 3 Year CO Gas Detector SST1-M-36

$210.00

Ships in 2 - 3 weeks

Description

Not every CO monitor needs to give you a number. Sometimes the job just needs a badge that alarms when you're in danger — no calibration schedule, no battery replacement cycle, no training curve. That's what the SST1 Limited-Life line is for.

Carbon monoxide is odorless, colorless, and tasteless. Workers get zero sensory warning that CO is accumulating in an enclosed space — not until the physiological effects kick in (headache, dizziness, confusion), and by then the exposure is already past regulatory limits and can escalate quickly. For CO, the monitor isn't a backup to your senses. It IS the warning system.

The WatchGas SST1 3-Year CO gas detector is an alert-only monitor: no digital ppm display, factory-set alarm setpoints anchored to the NIOSH REL for carbon monoxide, non-serviceable, and no maintenance required. Activate it once, and it runs continuously for three years — no calibration, no battery replacement, no charging — alarming immediately when it detects CO above the factory-set thresholds.

Two ways to run CO monitoring — pick the one that fits your job.

The SST1 line covers both:

Full-instrument, serviceable: the WatchGas SST1-M serviceable CO monitor — digital ppm readout, configurable low/high/TWA/STEL alarms, replaceable sensor cell at end-of-life, integration with the WatchGas SST platform. Higher upfront cost; lower lifecycle cost when the monitor stays in service for years.
Limited-life, alert-only (this SKU): no display, factory-set alarms, no maintenance for three years, discarded at end-of-life. Lower upfront cost; simpler operation; ideal for jobs where a full instrument is over-spec.

Factory-set alarm thresholds, anchored to U.S. regulatory exposure limits for carbon monoxide: Low 35 ppm matches the NIOSH REL TWA (35 ppm 8-hour). High 200 ppm matches the NIOSH REL Ceiling (200 ppm not to be exceeded at any moment). Both are stricter than OSHA's PEL of 50 ppm 8-hour TWA under 29 CFR 1910.1000 Table Z-1, which does not establish a separate ceiling for CO in general industry. Because the alarms are factory-set (not user-configurable), you don't need to train workers on setpoint programming, and there's no risk of accidentally reconfiguring a monitor away from a compliant threshold in the field.

Who buys the SST1-M-36 for CO monitoring:

Boiler operators and industrial combustion equipment workers — CO is a natural byproduct of incomplete combustion
Vehicle emissions monitoring — garages, warehouses with propane forklifts, tunnels, parking structures
Fire departments and structural fire investigation crews — post-fire CO risk is real and persistent
HVAC and plumbing technicians servicing gas appliances, furnaces, water heaters
Grain drying and crop processing operators — CO accumulates in enclosed drying operations
Industrial furnace, kiln, and metallurgy workers
Welding operations in enclosed spaces — indoor welding produces CO from consumables and preheat
Fleet-supplemental backup monitors at facilities that primarily run a full-instrument SST1-M fleet
Emergency response teams needing grab-and-go CO inventory (fire departments, mutual-aid teams)
Training programs and consultants on temporary deployment at client sites

Sensor and alarm specifications:

Sensor	Gas measuring range	Low alarm (factory-set)	High alarm (factory-set)
CO (3-year fixed life)	0 – 2000 ppm	35 ppm (NIOSH REL TWA)	200 ppm (NIOSH REL Ceiling)

PK Safety services the full WatchGas SST line with factory-trained technicians in-house. The SST1 Limited-Life alert-only monitors don't require calibration during their fixed lifespan (the whole point of the design), but if you're mixing them with a fleet of the serviceable SST1 line — or with any other gas detectors — PK Safety supports the full WatchGas SST platform, plus BW/Honeywell (Factory Authorized Service Center), RKI, and RAE Systems. Call us at 800.829.9580 to talk through your CO monitoring workflow with someone who understands both product tiers of the SST1 line.

Important lifecycle notes:

Warranty: One year shelf life (unactivated) then three years from activation date. Your operational clock starts the moment you turn the monitor on for the first time.
Once activated, the monitor cannot be shut down. It continues to run for its full three-year life span, and cannot be returned or shipped once activated (an alarm during transit is possible). Unactivated monitors can be returned normally.
Not resellable after activation. Buy for a specific worker or crew; the monitor stays with them.
The display shows MM and DD — months and days remaining before the monitor expires — not the current gas concentration.

Technical documents:

Brochure

Specification Sheet

Quick Start Guide

Manual

Part Number: WG01-SST1-M-36 — SST1-M-36 CO 0–2000 ppm 3-year fixed life (carbon monoxide)

Frequently Asked Questions

How does the SST1-M-36 alert-only monitor differ from the full-instrument SST1-M?

The SST1 platform offers two tiers for CO monitoring, and this is the alert-only tier. Two key differences:

Display and configuration: the SST1-M-36 has no digital ppm display and no user-configurable alarm setpoints. It shows months and days remaining on its lifespan, and alarms when CO exceeds its factory-set threshold. The WatchGas SST1-M serviceable CO monitor shows continuous ppm readouts and offers configurable low/high/TWA/STEL alarms.

Sensor lifecycle: the SST1-M-36 is non-serviceable — discarded at end-of-life after three years of continuous operation. The full-instrument SST1-M is serviceable — the sensor cell can be replaced, extending the monitor's service life beyond the sensor's own lifespan.

Choose the SST1-M-36 for jobs where simplicity matters more than data (contractor work, occasional entries, training, backup inventory). Choose the SST1-M for fleets that stay in continuous service across multiple years.

What are the factory-set alarm thresholds, and how do they align with OSHA and NIOSH?

The SST1-M-36 ships with factory-set alarms of Low 35 ppm and High 200 ppm. Both are anchored to the NIOSH Recommended Exposure Limit for carbon monoxide, which is stricter than the OSHA PEL for CO:

OSHA's PEL for carbon monoxide under 29 CFR 1910.1000 Table Z-1 is 50 ppm as an 8-hour time-weighted average. OSHA does not set a separate ceiling limit for CO in general industry.

NIOSH's REL is stricter: 35 ppm 8-hour TWA plus a 200 ppm ceiling not to be exceeded at any moment.

The SST1-M-36's Low 35 ppm alarm matches the NIOSH REL TWA exactly, and the High 200 ppm alarm matches the NIOSH REL Ceiling exactly. Because the setpoints are factory-set (not user-configurable), you don't need to train workers on setpoint programming, and there's no risk of a monitor being accidentally reconfigured away from a compliant threshold in the field.

If your facility's internal exposure program requires stricter setpoints than NIOSH — for example, ACGIH's TLV-TWA of 25 ppm for CO — the full-instrument WatchGas SST1-M serviceable CO monitor is the right choice; its low/high/TWA/STEL alarms are all configurable.

Why is CO monitoring different from monitoring other gases?

Carbon monoxide is odorless, colorless, and tasteless. Unlike H2S (rotten-egg smell at low ppm), ammonia (pungent), or sulfur dioxide (sharp acid smell), CO gives workers zero sensory warning that concentrations are building up in an enclosed space. Symptoms of CO exposure — headache, dizziness, confusion, nausea — typically don't kick in until concentrations are already past regulatory limits, and CO poisoning can escalate quickly from mild symptoms to loss of consciousness.

That physiology has one operational implication for CO monitoring: the monitor isn't a backup or a confirmation of what workers can already sense. It IS the warning system. Whether you use a full-instrument SST1-M for continuous ppm readouts or an alert-only SST1-M-36 for factory-set threshold alarming, the monitor is the difference between recognizing a CO buildup in time and getting caught by it.

What does "3-year" actually mean? When does the clock start?

The lifecycle has two phases. Before activation, the monitor has a one-year shelf life (from manufacture date) during which it can sit unactivated in a warehouse or on a shelf without draining any capability. Once you press the activation button for the first time, the monitor runs continuously for three years — no user intervention required, no calibration, no battery replacement, no charging.

The display shows MM (months) and DD (days) remaining on the monitor's operational life so workers can see how much time is left. At the end of the three-year lifespan, the monitor stops functioning and gets discarded.

Does the SST1-M-36 work with the WatchGas SST-DOCK and SST-KIOSK?

Partially. The SST1-M-36 can be bump-tested using the WatchGas SST-DOCK — useful for verifying the monitor still alarms correctly at a given point in its three-year lifespan. However, it cannot be calibrated (the factory-set thresholds are permanent by design).

The WatchGas SST-KIOSK compliance kiosk can check in the SST1-M-36 and log its alarm-event history and remaining lifespan to fleet software — same as the full-instrument SST1 line.

How does PK Safety support the SST1-M-36 after purchase?

PK Safety carries the full WatchGas SST line, including the Limited-Life alert-only tier. Since the SST1-M-36 doesn't require calibration or maintenance during its fixed three-year lifespan, post-sale support is primarily replacement (when a unit approaches end-of-life) and mixed-fleet coordination if you're running Limited-Life alongside full-instrument SST1 monitors or other brands.

Call 800.829.9580 to talk through your CO monitoring workflow with someone who understands both product tiers of the SST1 line — not a call-center script.

Not sure which SST1 tier fits your workflow? Call PK Safety at 800.829.9580. A person who knows the alert-only vs. full-instrument choice will pick up.