Ultrasonic petatoir of domestic
This product produces a special ultrasound, in a certain spatial range, the ultrasonic environment can stimulate the nervous system of flies and affect its behavior, discomfort for the fly is unfavorable and flies try to escape from the environment.
This ultrasound in the environment can reduce the activity of the ores so as to improve people's daily lives. This product is used in offices, houses, warehouses hospitals, supermarkets, hotels and other places, in an effective space of 60 m2. Continuous use increases the efficiency of the repellent. Don't snooze on the product if a fly flies into a room where the scaremonk is located, and eventually it will fly out if it finds out where it came from. The scare is made to scare them, but 100% it certainly isn't, but you're sure to see that there's a certain effectiveness the scaremonger has, nothing else on the market. So it's best if a fly has a place to fly, the device doesn't kill it, it just repels it.  
You insert the ultrasonic repellent into a 230V socket, the green light will melt – the power indication i.e. the power supply is fine. The red light indicates that the system is working and the ultrasonic emissions will start to pulsate in space in 60 seconds after take-off, the green light will light up, which flashes. The green indicator light flashes at a frequency with the same period as the ultrasonic wave.
The product is not waterproof, do not place it on the outside to prevent moisture or water from entering. Use the product as far as possible in a well-ventilated place so that flies can also fly out of the area.
This is not a toy, please do not let children play with this product.
Electric Utrasonic repellent flies A323-836 fly in the invine band for the human ear.

Electrical Utrasonic Housefly Repeller Fly 836
"We're going to have to do that," he said. This product through special frequency ultrasound, in a certain spatial scale make a ultrasound environment can stimulate the nervous system of flies and influence its behavior,feel discomfort and got away. This ultrasound environment can reduce the activity of the flies so as to improve people's daily lives. This product is widely used in home, offices, warehouses, hospitals, supermarkets, hotels and other places, the effective area could reach 60 square meters. The products have been continuous use (≥ 2 weeks) will be effectiveness.

[How to Use] 

Ultrasonic housefly repeller insert into the 220V power outlet, the green light shows that power supply is working. Red light, indicating that the system is working; ultrasonic emissions in 60 seconds after start, the green light will blink, flicker frequency with the same frequency of the ultrasonic wave. Ultrasonic housefly repeller should be continue using; the red light stay lighr on indicate the ultrasonic no-working. . 

[Notice] 

The product does not waterproof, avoid outdoor use, to avoid humidity environmental using this product as far as possible on the well-ventilated place, avoid high-temperature environments. Do not dismantle the product by yourself,avoid collision. 

This is not a toy, please do not put let children play.