Amphenol Telaire T5100 Series

Amphenol logo image

Low-cost Wall Mount CO2 Transmitter 

Telaire T5100 Series of Wall Mount CO2 Transmitters offers low cost, high performance CO2 transmitters for the building controls market. It works seamlessly with building automation systems, and allows you to simply and effectively control fresh air. Demand-controlled ventilation using CO2 sensors prevents energy loss from over-ventilation while maintaining indoor air quality.


  • Patented, Absorption Infrared Gas sensing engine provides high accuracy in a compact low cost package
  • Patented ABC Logic™ self-calibration system eliminates the need for manual calibration in most applications
  • Lifetime CO2 calibration guarantee when using ABC Logic™
  • Mounting plate with two-piece terminal blocks provide quick, easy wiring
  • Gas permeable, water resistant CO2 diffusion filter prevents particulate and water contamination of the sensor
  • Locking screw secures cover and sensor to the mounting bracket for tamper resistance
  • Sensors are shipped factory calibrated
  • Modern enclosure
  • Low cost
  • Reliable (20 years of low-cost infrared sensor manufacturing)
  • UIP software compatible for customizations
  • CE, RoHS, REACH and WEEE compliant
  • Lifetime calibration warranty
  • Two enclosure sizes for regional acceptance

Data Sheet





Sensing Method

Gold-plated optics, Non-dispersive infrared (NDIR) absorbsion, Patented ABC Logic self calibration algorithm

CO2 Measurement Range

(0 ppm = 0 V, 4 mA), 0 to 2000ppm

CO2 Accuracy

±30 ppm or 3% of the reading shown, whichever is higher *

Power Supply Requirements

18-30 VAC RMS, 50/60 Hz, or 18 to 42 VDC,polarity protected*AHRAE — regulation 62 states maximum indoor CO2 level of 1000 ppm

Power Consumption

Typical 0.7 W at nominal voltage of 24V AC RMS

Temperature Dependance

0.2% FS per °C (±0.11% per °F)


<2% of FS over life of sensor (15 years)

Pressure Dependence

0.135% of reading per mm Hg


CE EMC, RoHS, REACH and WEEE compliant

Signal Update

Every 5 seconds

CO2 Warm-up Time

<2 minutes (operational), 10 minutes (maximum accuracy)

Operating Conditions

0 to 95% RH, non-condensing, 32°F to 122°F (0°C to 50°C)

Storage Conditions

-40°F to 158°F (-40°C to 70°C)

Flammability Classification

UL94 5VA


Field selectable voltage or current, Voltage only (0-10 or 0-5V)- Current only (4-20 mA)

Analog (CO2)

0 to 5 V, or 0 to 10 V jumper selectable (100 Ω output impedance) Or 4 to 20 mA (RL maximum 500 Ω), Digital to analog error ±1%, Voltage and current outputs are not available simultaneously