GASTEC CD-1000 Carbon Dioxide Concentration Meter Color: White Retail Price: ¥47,300 Improve poorly ventilated, enclosed spaces with the CO2 concentration sensor. Simply turn it on to check the CO2 concentration. A lamp lights up when the CO2 concentration is high. You can check the CO2 concentration from a remote location with the app. (Compatible with Android / iOS / Windows) Although it is a new, unused item, the box has been opened once for the purpose of taking the photos. Please refrain from purchasing if you are concerned about minor details, as it is a home-stored item. Purchase without comment is OK ⭕ Regarding shipping and packaging, recycled materials may be used. Thank you for your understanding. #igarashiRetroRare☆ We are also selling other rare retro items! Please click the tag above to take a look.