Environmental Monitoring

Trumouse includes built-in multi-channel environmental sensors that continuously acquire and log the air quality, acoustic and lighting conditions, and the temperature and humidity of the animal activity area. Each channel is sampled once every 30 s; the data is written to the database and can be exported together with the experiment’s acquired results. All channels are monitored throughout the experiment; whenever any reading exceeds its configured range, the system automatically alerts the operator, enabling timely intervention to maintain the animals’ living environment (see also Site Cleaning and Equipment Maintenance).

The measurable environmental parameters and the specification of each channel are as follows:

Table: Environmental monitoring sensor specifications

Sensor	Parameter	Specification
Air temperature	Range	-40 ~ 80 °C
	Accuracy	±0.5 °C
	Resolution	0.1 °C
	Repeatability	±0.2 °C
	Drift	< ±0.1 °C/year
Air humidity	Range	0 ~ 100 %RH
	Accuracy	±3 %RH
	Resolution	0.1 %RH
	Repeatability	±1 %RH
	Drift	< ±0.5 %RH/year
Carbon dioxide (CO₂)	Method	NDIR dual-channel (non-dispersive infrared)
	Range	400 ~ 5000 ppm
	Accuracy	±4%
	Resolution	1 ppm
	Repeatability	±1%
Ammonia (NH₃)	Principle	Electrochemical
	Detection	Online, diffusion
	Range	0 ~ 20 ppm
	Resolution	0.01 ppm
	Accuracy	< ±5%
	Stability	< ±2%
	Repeatability	< ±2%
Total volatile organic compounds (TVOC)	Principle	Semiconductor
	Detection	Online, diffusion
	Range	0 ~ 100 ppm
	Resolution	0.1 ppm
	Accuracy	< ±4%
	Stability	< ±2%
	Repeatability	< ±1%
Noise	Range	30 ~ 130 dB
	Frequency response	20 Hz ~ 20 kHz
	Frequency weighting	A-weighting
	Time weighting	F (Fast)
	Accuracy	±2.5 dB
	Resolution	0.1 dB
Light	Detection band	Visible light 400 ~ 730 nm (peak 560 nm)
	Illuminance range	0 ~ 65535 LUX
	Accuracy	±7%
	Resolution	1 LUX
	Repeatability	±5%