ELT Sensor S-300
Manufacturer-verified NDIR CO₂ sensor module for OEM integration. Specifications below use the manufacturer’s published information for the displayed model.
Key Specifications
Product Positioning
ELT Sensor S-300 is part of ELT SENSOR’s NDIR CO₂ module portfolio for integration into air-quality, HVAC, building or industrial equipment.
Official Resources
Use the manufacturer’s current documentation as the authoritative source for integration and purchasing.
View ELT SENSOR Official ResourceAirAlign is an independent informational resource and is not affiliated with ELT SENSOR. Specifications can change.
ELT S-300 — built-in CO₂ calibration modes and factory outputs — engineering selection and model documentation
The published manufacturer values below are bounded to their orderable range, test conditions and actual interface, not general guarantees about every relative in the same sensor family.
| Parameter | Manufacturer evidence | Engineering boundary |
|---|---|---|
| Sensing method | Gold-plated NDIR infrared gas chamber, pre-calibrated at manufacture | True carbon-dioxide sensing with optical stability goals, not all-gas detection. |
| Physical dimensions | 33 × 33 × 13.1 mm; about 10 g on OEM S-300 v2.82 sheet | Larger than T-110 19×29.3×8.5 mm, incompatible footprint. |
| Range portfolio | 0–2k, 5k, 10k, 20k, or 50k ppm selected model versions | Exact article and hardware firmware determine scaling. |
| Declared grade | Maker catalogue ±(30 ppm + 3% reading) | Published grade depends on reference environment, offset and recalibration. |
| Digital outputs | TTL UART, I²C, and ALARM; optional PWM/analog voltage | I²C and PWM/voltage options must be wired to ordered pins/version. |
| Calibration functions | ACDL periodic automatic calibration and MCDL non-periodic manual calibration | Self-calibration requires adequate reference schedule; greenhouse-enriched air is a known challenge. |
| Installation and use | Greenhouse, stock-raising, HVAC and science OEM uses per original maker sheet | These product contexts do not automatically certify it as a personnel CO₂ detector. |
System integration and calibration
Use ELT Sensor S-300 current pinout, electrical rails and command codes instead of borrowing them from the S-300E/S-110 product sheets. The original versioned S-300 datasheet emphasizes both ACDL and MCDL; continuous high CO₂, grow-room production and sealed bioprocess equipment benefit from planned reference-gas manual calibration. The module provides a CO₂ sensing signal, not a complete ventilator or certified oxygen-deficiency monitor. Ensure averaging, pressure/temperature changes and sample inlet flow are represented in the controller error budget.
Source and exact-order documentation: Original manufacturer catalogue, page and/or technical data sheet. Any version- or test-bound claim must be checked against the supplied production label before procurement.
AirAlign model-specific technical editorial update · 25 October 2026. These OEM values are not independently calibrated, certified, or evidence of active supplier stock.