GS-CO2 Space Mounted Carbon Dioxide & Temperature Transmitter with LEDs. Non-Dispersive Infra-Red (NDIR) and temperature sensors. 3-colour LED indication: Green <1,000ppm; Amber 1,000 to 1,500ppm; Red >1,500ppm. Measurement Ranges: 0-2,000ppm & 0-40°C. Output: 2 x 4-20mA or 0-10vDC selectable. Power supply: 24vDC. IP30 Flame retardant ABS housing, dimensions 115 x ...