5g mobile phone signa5G jammer built-in antenna power supply 9-segment frequency transmission is suitable for school examination room conference room factory

Application occasions
Examination rooms, prisons, military sites, courts, conference rooms, theaters, hospitals, government agencies, financial institutions, churches, monasteries, libraries, business negotiations, gas stations, personal privacy protection and other places that need silence, confidentiality and information security.

Shielder basic knowledge installation and use instructions
1. Take out the main shield machine from the packaging box;
2 Screw the antennas into their respective corresponding antenna seats, otherwise they will be invalid;
3 Hang the shield on the wall or the corresponding position, and the best installation height is 1-2 meters;
4 Turn on the switch of the power supply, and the working indicator light on the power supply indicates to start working. If it is a built-in lithium battery, please make sure it is fully charged before use.

Matters needing attention
1 the antenna must be installed according to the corresponding identification on the host before turning on the host power supply.
2 The effective coverage area of the shield is a circular area centered on the shield, so pay attention to correctly selecting the placement position of the shield to avoid shielding dead angle; If it is a directional antenna, the alignment direction can be adjusted according to the standard sector angle of the antenna.
3 Shielders should be placed in well-ventilated places, avoiding large objects and strong electromagnetic sources with strong heat sources as far as possible to ensure shielding effect and long-term stable work.
4 When the shielding device is working, it is not allowed to stack other articles and disassemble the antenna, so as not to affect the shielding effect and damage the machine.
5 When the shield is not in use, the power should be cut off in time, so as not to affect the normal use of the mobile phone.
6 When using the shield outdoors, attention should be paid to dustproof and waterproof. Please keep away from corrosive gases and liquids, and do a good job of dustproof and moistureproof, so as not to accelerate the aging of internal components of the equipment
7 When the area of the site used is larger than the effective shielding range, it is recommended to install several shields in honeycomb to ensure the shielding effect.
8 Since the power supply and antenna are used exclusively with the host, and they are debugged in one-to-one correspondence during factory debugging, please try not to use them interchangeably to ensure the best effect.