Anabat Detector

  1. Please follow the Quickstart User Guide provided with the Anabat Express. Instructions are underneath the orange highlighted line.
  2. The detector should be set on Night Only mode if using the detector in a stationary position.
  3. The detector should be set on Night Only mode with the transect mode activated (see instructions below) when undertaking a transect (a walking, cycling or driven survey).


Testing the System

To test the operation of the detector before deployment you can open the camouflage case and rub your fingers in front of the microphone; the microphone LED (inside the case) will flicker to confirm that an ultrasonic audio signal is being detected. To test the operation of the detector while the camouflage case is closed, after deployment, place the magnet (at the end of lanyard) next to the check LED (beside microphone, on outside of case); a brief flash indicates the unit is working. Hold the magnet next to the check LED and rub fingers near the microphone. The LED flickering faintly confirms that ultrasonic audio signals are being detected.

Mounting and placement

The placement of any detector can have a significant effect on the results of a survey. It is important to consider the location and height of the detector. Detectors are typically placed in or beside a ‘flyway’, a corridor where bats will fly through or beside vegetation.

Avoid placing the detector inside dense vegetation where most bats cannot fly. Avoid having vegetation or other objects between the detector and the bats expected flight path, or close beside the detector, as echoes can degrade the signal. The best signals will be obtained when the microphone is in the open, away from other objects and pointing in the direction of the bat’s expected flight path.

We do recommend the Anabat Express is mounted vertically (refer to the section on weatherproofing) so that any rain water runs off the microphone and doesn’t settle on the element. Also make sure that the magnetic lanyard is not being blown around in the wind as this may cause unwanted noise on your recordings. It is also important to avoid surface noise, such as vegetation brushing against the detector case of microphone.


A few polite requests:

Please recharge the batteries before taking back the kit. There is not always time to recharge them between loans and we do not want batteries to die half way through when someone is surveying. There are battery chargers with every kit  (and battery testers with most kits).

Please make sure you remove the microphone and replace the dust cap on the socket before packing the detector up and handing it over.

Download the quick start guide