Furley’s Ultrasoon Anti Blaf Apparaat Hond – Zonder Schok – Oplaadbaar – Automatisch – Blafcontrole Voor Binnen en Buiten – 15m Bereik – Tegen Blaffen

This device automatically detects barking and emits an ultrasonic tone to interrupt barking, suitable for indoor and sheltered outdoor spaces.

• The description claims the device uses automatic detection and ultrasonic signals to stop barking.