The Model #HSK-CO is a basic carbon monoxide detector strip.
Hang it near a heater vent or living area and periodically check it.
If the center dot turns dark, air the house out immediately and call
a professional to service the furnace or heater.

The HSK-CO includes a CO detector strip and a wall mounting
bracket where the imprint is placed. This allows the imprint to
stay in place when you sell your customer a refill set of detector
strips 90 days after the original sale.
Imprint method: Silkscreen                            Item size: 5" x 3"
Imprint area: 1" W x 1" H
Standard case colors: White