Terms & Conditions By choosing the Subscription Option You agree to pay $0 upfront equipment & installation costs plus a monthly payment of $3.50 + Tax, on a 60 month term.Carbon Monoxide DetectorC$179.00PriceExcluding GST/HSTPrice Options*One-time purchaseC$179.00Carbon Monoxide SubscriptionC$3.50every month for 60 monthsBuy Now