10-channel mobile phone signal blocker that only shields on-site mobile phone reception

This machine adopts 10 channels of output, which can shield all kinds of mobile phone signals in the range of 1-4 meters (depending on the signal strength of the base station) in domestic and foreign mobile phones; contact was completely cut off. The 10-channel mobile phone signal blocker is a green and environmentally friendly mobile phone signal blocker. It only blocks the reception of the mobile phone on site, and has no effect on the surrounding base stations.

Installation Notes

1. Before installing this device, be sure to install the antenna correctly according to the signs, and then turn on the power to avoid the machine from being burnt out. It can be used in small-scale shielding places such as vehicles, offices, etc.

2. The device comes with a rechargeable battery, which can be recharged and used for 2 hours at a time. It has a battery protection function inside, constant current and constant voltage charging with overcurrent and overheat protection, charging status indication, and charging current detection. If it has not been used for a long time, please pay attention to the maintenance charging every half month.

Instructions

The working mode of the machine is controlled by the power supply

1. Open the box, check whether the accessories are complete, take out the host, remove the antenna protection cap, and install the antenna; the numbers on the antenna are tightened one by one with the numbers on the host.

2. Make sure that the antenna is correct, turn on the power switch, and observe that each green indicator on the host lights up.

3. Please charge for 10-12H for the first time. When charging, you need to observe the charging indicator. When the charging indicator turns off, the charging is complete.

Precautions:

1. The farther the portable unit is from the base station, the farther the shielding distance will be. For example, in GSM, when the signal field strength of the base station at the installation point is -75dBmv, the maximum distance between the shielding center is about 2 meters. The greater the signal field strength of the base station, the smaller the shielding distance. When the signal field strength of the base station is greater than -35dBmv, the maximum distance of the shielding center is only 0.5-1 meters.

2. The shielding range refers to the circular area centered on the machine. The shielding signal is sent by the host and spreads outward from strong to weak. Appropriate placement should be selected at the application site, and cellular placement should be adopted to make the shielded signal evenly distributed.

3. Human bodies, objects, walls, etc. will block the transmission of shielded signals. When using, try to avoid obstacles.

4. The machine should be used in a cool and dry place, avoiding direct sunlight and rain and fog invasion.