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Most household CO alarms are designed to remain silent at low readings. The VASAIKO HD16 adds another layer of awareness by displaying live CO levels from 0–999 ppm, refreshed every 2 seconds.
It also brings combustible gas, smoke, temperature and humidity information together on one easy-to-read color screen—so you can understand more of what is happening around you.
Key points:
Add the Missing Layer
HD16 helps you monitor more than carbon monoxide. Its color display brings five important readings and alerts together in one place:
Instead of relying only on an alarm tone, you can view the current CO level, temperature and humidity at a glance. Built-in battery backup completes the 6-in-1 monitoring system, helping the device continue operating when AC power is unavailable.
HD16 uses an electrochemical CO sensor to display readings across a 0–999 ppm range. The displayed value refreshes every two seconds, making it easier to notice changes and monitor trends over time.
The bright 2.8-inch color screen clearly presents CO concentration, gas and smoke status, temperature, humidity, battery level and alarm condition—all without opening an app.
Use the standard AC adapter for continuous monitoring at home. When portability matters, detach the monitor and attach the included magnetic adapter.
Simple One-Button Status CheckA short press of the test button initiates the device’s self-check sequence, allowing you to confirm its audible, visual and status functions before use.
Clear power, fault and alarm indicators make routine status checks straightforward—without complicated setup or app pairing.
For best results, test the unit regularly and follow all installation, placement and maintenance instructions included with the product.
The built-in 1,000mAh rechargeable battery provides approximately eight hours of backup operation, making HD16 useful during short power outages and for temporary monitoring away from an outlet.
Suitable locations include:
HD16 is a supplemental monitor intended to provide additional environmental awareness. It is not a substitute for UL 2034-listed carbon monoxide alarms, UL 217-listed smoke alarms or other devices required by state and local codes. Keep all required alarms installed and properly maintained.
Free US Shipping
Free shipping across the US, with no minimum order. Orders ship the next business day from our local warehouse and typically arrive within 3 days. We'll email your tracking link as soon as your order leaves the warehouse.
30-Day Returns
Original packaging required. Customers pay return shipping for non-defective items. Verified defects qualify for free replacement; a fault video is required.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, just go to our contact page and tell us the exact issue so we can start the return/refund process.
You can always contact us for any return questions.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
If you receive damaged products, make sure to reach out to us and send us video asap. So we can get the issue fixed for you.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.
Thank You.
Shipping Rates & Delivery Estimates:
Shipping charges for your order will be calculated and displayed at checkout. We offer various shipping methods and rates depending on your location. Delivery estimates are provided to help you anticipate when your order will arrive but are not guaranteed.
Order Tracking:
Once your order has shipped, you will receive a tracking number via email so you can monitor your package’s progress. Please allow 24-48 hours for the tracking information to be updated after receiving your confirmation email.
International Shipping:
We offer international shipping to a variety of countries. International shipments may be subject to customs duties and taxes, which are the responsibility of the customer. Please be aware that customs clearance times vary by country, and we cannot control delays caused by customs.
Lost or Damaged Items:
If your order is lost or damaged during shipping, please contact us immediately. We will assist you in resolving the issue and provide a replacement or refund as necessary.
Incorrect Shipping Information:
Please ensure that the shipping address is entered correctly during checkout. We cannot be responsible for delays or non-delivery caused by incorrect or incomplete address information.
