Safety Instructions and Notes¶
Note
Before using the device, please read this manual carefully and keep it for future reference.
General safety instructions¶
Danger
Failure to observe the information associated with this warning symbol can result in serious injury or even death.
Danger
Use of the device can be dangerous and must be avoided in the following areas:
Where it can interfere with other electronic devices such as hospitals, airports, airplanes, etc.
Where there is a risk of explosion, such as petrol stations, oil refineries, etc.
During thunderstorms to prevent the risk of lightning strike
Modification or alteration of the device impairs product safety. Attention Danger of injury!
Only use CE certificated power supplies that are compatible with USB-IF standards on the USB port.
Only use 12V external power sources with the specifications shown in the manual or the provided power supply from Elekon.
Do not use the device if it has any damages or is disassembled.
Always take all necessary safety precautions when placing the device in the field to stop injuries from falling or tangling yourself with the microphone cable.
The device must be kept out of the reach of children. Small pieces like the microSD card can pose a choking hazard.
Warning
Use the device only in its intended manner. Any other use may result in damage to the device or the surroundings of the device.
Do not place the unit on or near a heat source (heating, fire, etc.). Protect the device from high temperatures and temperature fluctuations.
Do not expose the unit to a heat source or in a high-temperature location, such as in an unattended vehicle in the sun.
Do not operate the unit outside the specified temperature range.
Place the unit in such a way that it cannot become a hazard if it falls down, falls over, etc. Always make sure that the device is well secured.
Do not allow foreign objects (coins, metal pins, insects, etc.) or liquids to enter the device.
Only use original accessories, otherwise the device or the accessories may be damaged.
Make sure that the use of this device is permitted in the country and in the desired environment.
It is the user’s responsibility to comply with country-specific regulations and ordinances.
Never carry out repairs yourself.
Handle the device carefully. It can be damaged by knocks, blows or falling from a low height.
Avoid operation in the immediate vicinity of strong magnetic or electromagnetic fields, transmitting antennas, HF generators or near electronic devices such as mobile phones. This can impair operation.
The stored data may be destroyed or deleted by operating errors, device malfunctions or repair measures. Therefore, it is always advisable to make a backup copy to the PC hard disk for important content.
Be careful when removing the microSD card. Press the card down carefully to minimize the risk of the card being quickly released.
Be careful when closing the device to avoid pinching fingers.
Do not put any power sources to other inputs than the external power input or the USB-C input.
Battery¶
The device has an internal lithium-ion battery with 3.6V, 20.4Ah. For transport and storage of several BATLOGGERs together, the relevant regulations must be observed.
USB Charging¶
Only use power supplies that have a CE certification and provide a minimum of 500mA/5V.
To guarantee optimim charging without any safety issues, use certified chargers that are USB-IF approved and marked with this logo:

Solar panel¶
Use a solar panel with:
nominal voltage 12VDC
MPPT 18VDC
VOC max 26VDC
Power 5-20W
Connect them using the adapter cable for external power supplies that comes with your BATLOGGER C2.
Warning
Make sure that you connect the + cable to the + terminal on your solar panel and the - cable to the - terminal at your solar panel
External battery¶
Only use 12V batteries. Connect them using the adapter cable for external power supplies that comes with your BATLOGGER C2.
Warning
Make sure that you connect the + cable to the + terminal on your battery and the - cable to the - terminal on your battery
External power supply¶
Only use the external power supply provided by Elekon.
Microphone / ultrasonic sensor¶
The microphone itself can be damaged by water. It must therefore be protected from dirt, rain and extreme humidity and installed accordingly. A defective microphone can lead to unusable or incorrect data.
Protect connectors¶
Make sure that all the connectors that aren’t in use are covered with the protector caps that come with the device:

Measuring device¶
The BATLOGGER C2 is a very sensitive measuring device and must be treated as such.
In order to obtain usable and reproducible results, you should consider some preparatory measures and familiarize yourself with the device.
Basic knowledge of bats and ultrasound is required.
Maintenance and care¶
Clean the unit only with a lint-free cloth and do not use any aggressive cleaning agents.
Make sure that no water penetrates into the unit.
Note on environmental protection¶

Electric and electronic devices as well as batteries must not de disposed of with household waste. Consumers are obliged by law to return electrical and electronic devices as well as batteries at the end of their service lives to the public collection points set up for this purpose or point of sale. Details to this are defined by national law of the respective country. This symbol on the product, the instruction manual or the package indicates that a product is subject to these regulations. By recycling, reusing the materials or other forms of utilising old devices/batteries, you are making an important contribution to protecting our environment