Thank you very much for viewing! ^ ^ This is a new, unused item, but please understand and acknowledge in advance that there are minor scratches on the package. This item is still in stock, so if you would like to purchase multiple items, please comment in the comment section. m(_ _)m ● Manufacturer: Toa Industry TOACO2MG001 ● Product Name: CO2 Manager ● Product Size: 93 x 72 x 42mm ● Temperature Measurement Range: -10℃ to 60℃ (±2℃) ● Humidity Measurement Range: 5% to 99%RH (±5%RH) ● CO2 Concentration Measurement Range: 400 to 5000PPM ● Input Voltage: DC5V ● Approximately 9 hours of operation with approximately 5 hours of charging ● Product Contents: CO2 concentration meter x 1, USB cable x 1, Instruction manual x 1 ● Size (mm): 70 x 125 x 4 TOAMIT Thank you. m(_ _)m