Specification :

A. Introduction
The birds’ nests on the power transmission pylons or transformer substations easily lead to short-circuit and line tripping. Once such incidents occur, the power companies will suffer immeasurable loss. Ultrasonic Digital Bird Repelling Device ( TLKS-PUW) is specifically designed for the power companies. It is installed on the power transmission pylon or transformer substation to repel the birds to avoid accidents.
B. Working principle
Ultrasonic Digital Bird Repelling Device ( TLKS-PUW) is low power consumption and ultrasonic sound system which based on SCM. It takes the solar cells as the power supply. The ultrasonic will stimulate the nervous system of birds and let them far away from the coverage of ultrasonic. It provides a security environment for the power transmission lines. The changing ultrasonic frequencies ensure the durability of bird driving effects. It has the characteristics of low voltage, low power consumption, reliable performance and long working life.
C. Features
1. after installation, turn the power switch and then the indicator will light and issue 6 KHz low frequency ultrasonic for 10 seconds. It will enter into working status after 1 minute.
2. For energy saving and extending the use life, the Ultrasonic Digital Bird Repelling Device ( TLKS-PUW) will stop for 15 minutes after two minutes’ working.
3. The ultrasonic frequency of Ultrasonic Bird Driving Device is 12 KHz ~ 25 KHz. During the two minutes’ working, one minute is frequency sweep and one minute is fixed-frequency
D. Technical parameters

ITEM Parameters
Battery voltage DC12V
Ultrasonic sound pressure 120dB
Number of ultrasonic sounder 4 Æ 38mm
Effective working radius 12-15m
Battery working time 10 days
Working Current d 70mA
Quiescent Current 0.7mA
Frequency Range 12KHz-25KHz
Ambient temperature -40 ~ 65 
Size 260 × 200 × 190 ( mm)
Weight 3kg
E. Use occasions
Ultrasonic Digital Bird Repelling Device ( TLKS-PUW) is designed for exterior use such as gas stations, eaves, hotels, open parking lots, open-air restaurants or food courts, park and picnic areas, power transmission tower, air port.