Pentru interior.

Descrierea in lb. engleza:

Caution：
1. The machine should be installed at 80-120 cm from the ground and should be vertical to the ground.
2, should avoid carpets, curtains and other sound-attached materials, otherwise, the reduction of sound pressure will cause damage to the effect of hearing aids.
Use environment temperature: 0-40 degrees Celsius.
Non-toxic, environmental protection
Save and harmless
20-65KHz knockback
Ultrasonic frequency
80-120 square meters of protection area
Specification.
Frequency range: 22-65KHZ
Power supply:AC 90V-250V 50-60Hz
Power:3-4W
Size: 88x55x33mm (approx.)