Product Overview: The DST micro-ACT is an implantable biologger designed for monitoring activity and core body temperature in small animals. It is minimally invasive, simple to implant and explant, and features on-board calculation of acceleration statistics from 3-axis accelerometer data. Ideal for use in studies on small captive and free-ranging animals. Key Features: Statistical and raw 3-axis accelerometer data Minimally invasive Small size (3.3g) Stress-free long-term studies Guaranteed accuracy and performance Product Details: Each activity measurement consists of a burst activity measurement over one minute with a user programmable sampling frequency of 0.03Hz-10Hz. Statistical parameters are calculated on-board, based on the dynamic body acceleration of the animal. Raw accelerometer measurements can be stored in the logger’s memory for further processing. The DST micro-ACT simultaneously measures long term activity and core body temperature in the animal. The logger is simple to implant and explant and is made from ceramic housing to guarantee biocompatibility. This bio-logger is ideal for a variety of studies including those looking at behaviour, pre-clinical vaccine efficacy and stress response. It is suitable for use in laboratory, domestic and wildlife animal research, including studies on animal welfare and is suitable for use in all biosafety levels. Measuring acceleration derived activity gives researchers the chance to get an overall view of changes in the study animals’ activity over time. The DST activity loggers measure acceleration in three dimensions, in relation to earth‘s gravity field. Each activity measurement is composed of a burst activity measurement over one minute with a chosen sampling frequency of 0.03Hz-10Hz. The logger has a battery life of over 13 months, when sampling every 15 minutes at a 1Hz sampling frequency. The logger is especially useful when a comprehensive data set throughout the research period is needed with no disturbance to the animal. Since no data is transmitted there are no housing or environmental restrictions that apply to the data collection. Optionally, the loggers can be programmed with multiple different intervals within a study. This can, for example, be useful when different intervals are preferred during the day or night and can optimize battery life and save memory at the same time. Every logger is individually calibrated for temperature and comes with a calibration certificate. In addition, a static calibration is performed on the acceleration values eliminating the need for the user to normalize the data. The loggers’ accuracy and performance are guaranteed for one year after purchase. Technical Specifications: Sensors: Activity (3-axes acceleration) and temperature Size (Diameter x Length): 8.3 mm x 25.4 mm Housing Material: Alumina (Ceramic) Weight: 3.3g Data Resolution: 12 bit (Temperature), 13 bit (Acceleration) Acceleration Resolution: 2 mg Temperature Range: 5°C to +45°C (41°F to 113°F)** Temperature Resolution: 0.032°C (0.058°F) Temperature Accuracy: +/-0.2°C (0.36°F) Memory Type: FRAM Memory Capacity: 52,429 measurements per sensor (if all parameters are recorded simultaneously) Memory Capacity Bytes: 1,048,575 bytes / temperature 2 bytes, acceleration statistics 18 bytes Measurement Interval: User specified in minutes or hours Minimum Measurement Interval: 2 minutes Multiple Intervals Option: Up to 7 different intervals Measurement Options (Primary/Secondary): T OR T+ACT Data Retention: 25 years Clock: Real time clock. Accuracy +/-1 min/month Communications: Communication Box, wireless transmission when logger is placed in the box. Connection to PC: USB cable. Attachment Hole: 0.9 mm (in diameter) Battery Life: 19-154 days*** Accelerometer Sampling Frequency: 0.03Hz-10Hz Duration of ACT Measurement: 1 minute *Adjusted resolution**Outside ranges available upon request*** For 1Hz sampling frequency over 1 minute. Sampling interval 2-20min. Activity and temperature recorded simultaneously.Specifications may change without notice.