The TSM400-1-CP is a 1-Wire Wall-Mounted Carbon Dioxide and Atmospheric Pressure Sensor with a 1-Wire interface, designed for accurate monitoring in environments like retail spaces and office, and suitable for smart applications and data logging. It offers 400 to 5,000ppm with a 1ppm resolution & 10 to 1,200hPa with a 1hPa resolution. The unit features 12-bit precision, low power consumption, and supports multiple sensors on a single bus via its unique 64-bit serial code and a screwless terminal block.
The TSM400-1-CP is a multi-parameter sensor that utilises the 1-Wire protocol to measure both carbon dioxide (CO2) concentration and atmospheric pressure. This sensor is designed for high accuracy and long-term stability, thanks to its use of digital sensing elements for both parameters. Notably, the atmospheric pressure sensing element is factory calibrated and does not require any subsequent re-calibration throughout its lifespan.
For carbon dioxide measurements, the TSM400-1-CP offers a convenient self-calibration feature, which can be performed by exposing the sensor to fresh air (around 400 ppm CO2 concentration). Housed in a slim plastic enclosure, the sensor is suitable for installation in standard flush-mounted or cavity wall boxes (ø68mm with 61mm installation openings). Given that elevated CO2 levels can negatively impact productivity, increase blood pressure, cause headaches, and even pose life-threatening risks in high doses, monitoring CO2 concentration with devices like the TSM400-1-CP is crucial for maintaining healthy environments in offices, workplaces, schools, and other public buildings.
| Parameter | Carbon Dioxide | Atmospheric Pressure |
| Measuring Range | 400 to 5,000ppm | 10 to 1,200hPa |
| Resolution | 1ppm | 1hPa |
| Accuracy | ±(40ppm +5%) | ±1.5 (750hPa @ 25°C) ±2.5 (300 to 1,100hPa @ -20 to +85°C) |
| Power Supply | 4.5 to 26vDC | |
| Current Consumption | 25mA @ 5vDC (Peak 150mA @ 5vDC | |
| Operating Range | -20 to +60°C (5-95%RH Non-Condensing) | |
| Dimensions: | 81 x 81 x 30mm | |
| Weight: | 66g | |
| Connectors: | Screwless Terminal Block | |
TSM400-1-CP
£132.11
SPL2_RJ11
£15.08
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