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The external power source is plugged in through jack item 3. Polarity of power jack is shown in Figure 3.

 

 

 

 

Figure 3 – Polarity of jack for external power source. 

 
 

 

INTENDED USE 

 

2.1

 

Operating restrictions  

 

2.1.1

 

Working device cannot be placed closer than 2.5 m distance from a person. 
 

WARNING! 

Do not hold the device at a short distance next to a person's ears, as it can lead to 

headaches and temporary hearing loss.

 

 

2.2

 

Device usage.

 

2.2.1

 

Press the power button item 2 (Figure 2) to turn on the device. Immediately after turning on the LED 

starts to flash (item 6), and the device begins to emit ultrasonic waves.   

 
2.2.2

 

For resulting expelling effect, it is important to choose the right place for the device. Please consider 

the following factors: 

- Ultrasonic waves reflect from solid materials and are absorbed by soft materials 
- Ultrasonic waves do not pass through walls or partitions 
- Maximum effective device functioning is obtained by placing it at a distance of 60-70 cm from the ground 

(floor).

 

 
2.2.3

 

The result of device usage in closed space - a complete disappearance of pests is observed after 14 

of continuous operating.  

 
2.2.4

 

When using the device to expel rodents in gardens, it is recommended to seal it into a plastic bag and 

place directly into the rodent hole or heel in at 10 cm depth. In order to expel moles place the device sealed into 
plastic bag into a hole that was dug by a mole. 

 

3

 

MAINTENANCE.

 

 
3.1

 

Maintenance requires only replacing of batteries as well as cleaning the surface of the device. 

 
3.2

 

Current repair. Troubleshooting  

 

Typical problems and possible solutions are specified in Table 2.

 

Таблица 2

 

Problem 

 

Possible reasons

 

Possible solution

 

 

When you turn on the device the LED 
does not lit. 

 

Batteries are dead

 

Replace batteries 

 

Batteries are not properly 
installed 

 

Install batteries in accordance with 
polarity 

 

Device is defective

 

Take the device to service center

 

Summary of Contents for GRAD A550 US

Page 1: ...Ultrasonic rodent repeller GRAD A 550 US User manual INTK 433523 006 RE...

Page 2: ...echnical specifications 1 3 Device components 1 4 Structure and functioning 2 Intended use 2 1 Operating restrictions 2 2 Device usage 3 Maintenance 3 2 Current repair Troubleshooting 4 Packaging stor...

Page 3: ...ciple is based on intolerance of rodents to ultrasonic emission generated by the device Ultrasonic waves affect the nervous system of rodents causing them pain and discomfort Rats and mice lose their...

Page 4: ...oltage for operation from the external source V 9 1 2 7 Maximum current consumption by the device mA batteries 10 external power source 13 1 2 8 Emission operating frequency kHz from 20 up to 40 1 2 9...

Page 5: ...stalled ultrasound transducer item 1 power button item 2 jack for external power source item 3 battery cover item 4 LED operating indicator item 5 Structure and functioning Operating principle is base...

Page 6: ...o not pass through walls or partitions Maximum effective device functioning is obtained by placing it at a distance of 60 70 cm from the ground floor 2 2 3 The result of device usage in closed space a...

Page 7: ...e or railway in covered trucks or containers by air in pressurized compartments During transportation packed packages should be protected from precipitation and direct sunrays Transportation condition...

Page 8: ...the warranty period the supplier manufacturer or companies providing maintenance services should replace or repair it at its own expense 6 5 Customer loses the right to obtain warranty service in the...

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