Products

K33 LP T/RH

K33 LP T/RH is a low-power module that measures CO₂, temperature and humidity. The adjustable measurement interval results in average current that can be reduced to less than 52 μA (one measurement every 60 minutes).

Defining attributes

Maintenance free
Low Power
Individually calibrated
Long term stability

K33 LP T/RH is a low-power module that measures CO₂, temperature, and humidity. The adjustable measurement interval results in average current that can be reduced to less than 52 μA (measurement 1/60 min). The module is designed for low-power application. As all other sensors from Senseair, the module is designed for high-volume production, with full traceability by sensor serial number on all manufacturing processes and key components. Every sensor is individually calibrated and is provided with a UART digital interface.

Article number	033-8-0009
Operating principle	Non-dispersive infrared (NDIR)
Measured gas	CO₂
Measurement range	0–5000ppm
Accuracy	±30ppm ±3% of measured value, IIR filter enabled
Operating range RH	<80 % RH
Operation range °C	<50 °C
Warm-up time	≤3 min
Response time	<1 min
Power supply	4.75 - 12 V
Peak current	300 mA
Average current	1.5mA
Communication	I2C, UART
Outputs	Open collector output
Compliance	TBA
Maintenance	Maintenance free
Life expectancy	>15 years
Dimensions	57.2 x 50.80 x 11.80 mm (L x W x H)
Weight	TBA
Storage conditions	-30-70 °C

Disclaimer : Please refer to product specification for the complete technical details.

Article number	Product	Description
033-8-0008	K33 LP T	Low power sensor core for CO₂ and temperature measurement.
033-8-0009	K33 LP T/RH	Low power sensor core for CO₂, temperature and RH measurement.