**Please note that all CO2Meter operations will close starting at 3:00 pm et. Friday, April 19 in observance of the Easter holiday. All operations will reopen Tuesday, April 23 at 8:30 am et. All orders placed after noon et. on April 19 will ship on April 23. Thank you.**

News — Relay

CO2 Meter Helps Lower Heating Costs for Business

Nestled on the northern shore of Lake Superior, it gets cold in Thunder Bay, Ontario, Canada. The town typically has 203 days a year when the minimum temperature is at 0 °C or below. So it made sense when Dennis Wood, President of Cinevate in Thunder Bay, Ontario decided to take an existing 9,000 sq./ft. warehouse, gut it, and turn it into a net-zero energy building for his company. As part of the project, the Tongdy CO2 Monitor with Relay was integrated into the system to control a heat recovery ventilator (HRV) that warms fresh air by transferring the BTUs...

Read more →


Remote CO2 Storage Safety Alarm Relay Controlled Exhaust Fan

  Our Remote CO2 Storage Safety Alarms all include built-in relays that can be used to control up to a 3A ventilation fan. However, if you want to control a large exhaust fan, you'll need a bigger relay. To show our clients how to control a 120VAC, 10 amp exhaust fan with any of our Remote Storage Safety meters, we've created this short video. Using a small relay to control a larger one is a common job for a experienced commercial electrician. In addition, this video and wiring diagram can be used to connect any of our CO2 meters, transmitters...

Read more →