SZ Vodasafe WJ40 High Power Portable Multi-Band Wi-Fi Signal Isolator
SZ Vodasafe WJ40 is a newly launched high-power handheld portable full-band Wi-Fi signal isolation device independently developed by SZ Vodasafe. It adopts a four-antenna modular RF output architecture and provides two customizable frequency band configurations to match various on-site isolation demands. Every independent RF channel delivers up to 10W output power, with the maximum total output power hitting 40W, supporting an extensive signal isolation coverage radius. This device is specially developed to cut off wireless signals sent by Wi-Fi modules and hidden wireless cameras, delivering steady and reliable full-spectrum isolation performance for authorized confidential scenarios.
The unit comes with a compact portable body constructed with oxidation-resistant integrated aluminum alloy casing, paired with an integrated active heat dissipation system to sustain long-hour continuous operation. A large-capacity lithium battery is built inside to support fully wireless handheld deployment, while a matching external AC power adapter enables wired power supply for round-the-clock non-stop work. Fitted with an anti-interference digital display and slow-start circuit protection, the machine eliminates spark risks during startup and monitors core operating metrics including voltage, current and output power in real time for convenient on-site status checks.
Two Customizable Frequency Band Configurations
SZ Vodasafe WJ40 offers two mainstream frequency schemes for clients to select based on practical application needs:
Version 1: Full Wi-Fi 6E Standard Configuration
This variant covers all mainstream Wi-Fi frequency spectrums including the latest Wi-Fi 6E band, equipped with four independent 10W power channels. The first channel targets Wi-Fi 6E signals ranging from 5925MHz to 6425MHz with 10W single-channel output. The second channel covers the 2.4GHz Wi-Fi band between 2400MHz and 2500MHz at 10W power. The third channel handles 5.2GHz Wi-Fi signals from 5100MHz to 5500MHz with identical 10W output, and the fourth channel works for 5.8GHz Wi-Fi spanning 5500MHz to 5800MHz, also rated at 10W per channel. It fully covers 2.4G, 5G and Wi-Fi 6E wireless signals and effectively isolates all Wi-Fi-based wireless surveillance cameras.
Version 2: IoT & Dual-Band Wi-Fi Hybrid Configuration
This customized version adds 433MHz and 868MHz IoT remote control bands on the basis of classic 2.4G and 5.8G Wi-Fi, featuring four independent 10W power channels in total. Channel one covers 433MHz/434MHz IoT remote communication signals with 10W output. Channel two is designed for 2.4GHz Wi-Fi within the 2400MHz–2500MHz range at 10W power. Channel three takes charge of 868MHz IoT transmission signals with 10W single-channel power, and channel four shields 5.8GHz Wi-Fi signals from 5500MHz to 5800MHz at 10W output. Apart from blocking Wi-Fi surveillance equipment, it can isolate wireless remote controllers, IoT transmission modules and wireless cameras operating on 433MHz and 868MHz frequency bands.
Hardware and Electrical Parameters
The main unit measures 225mm × 110mm × 55mm without antennas. The full set, consisting of the main body, antennas, power adapter and power cord, weighs 3.12KG, and the total gross weight of the complete packaging reaches 4KG.
In terms of power supply, the matched AC switching adapter supports universal global input voltage from AC100V to 240V, converting mains electricity into stable DC 29.4V 2A power to feed the main machine. The internal lithium battery pack adopts 29.4V 10500mAh high-capacity lithium cells, enabling five consecutive hours of full-power continuous isolation work. Early draft materials record a temporary battery capacity mark of 5000mAh, while the official mass-production version upgrades to 10500mAh for longer endurance.
The effective isolation radius can reach up to 200 meters under standard ambient signal conditions. The actual shielding distance will vary according to local signal strength, surrounding base station density and signal attenuation caused by building walls. Each channel is fitted with standard 3dBi high-gain omnidirectional antennas to maximize isolation coverage and deliver even signal blocking across all directions.
Structural and Advanced Heat Dissipation Design
The internal structure integrates an oxidation-resistant aluminum alloy housing together with embedded heat sink modules, which rapidly dissipate heat generated by high-power RF chips. Two high-speed silent cooling fans are installed on the side of the main unit, forming a full-cycle air convection cooling system. This dual heat dissipation structure thoroughly solves the overheating issue of long-duration high-power operation, ensuring stable continuous output without power drop or automatic shutdown triggered by temperature rise.
For circuit production, the WJ40 series utilizes high-performance integrated RF chips and precision patch components. All circuit boards are processed with imported high-speed patch machines and professional reflow soldering equipment, drastically lowering circuit failure rates and maintaining consistent stable performance for mass-produced units. The built-in slow-start circuit restrains instantaneous current surges during power-on, eradicating sparking at power interfaces and extending the service life of power modules and batteries.
Advantages & Humanized Features
1.Ultra-wide isolation coverage: Capable of shielding full-spectrum Wi-Fi and optional IoT frequency bands, with a maximum effective isolation radius of 200 meters to cover large indoor and semi-open spaces.
2.Ultra-high single-channel power: Each independent RF channel supports 10W output, with total power exceeding 30W and peak full power of 40W, meeting high-strength shielding demands for high-security scenarios.
3.Human-body radiation safety: Electromagnetic field radiation (SAR) complies with the international ICNIRP human radiation protection standard, so long-term on-site operation will not expose operators to excessive radiation hazards.
4.Real-time digital monitoring screen: The anti-interference embedded display shows real-time operating voltage, working current and output power, allowing staff to check equipment status at a glance.
5.Dual power supply modes for flexible portability: The built-in large-capacity lithium battery supports wireless handheld mobile use without external cables; the universal matching AC adapter connects to mains power for fixed long-term deployment.
6.Omnidirectional high-gain antennas: Standard 3dBi gain antennas deliver 360-degree uniform signal isolation with no blind coverage areas.
7.Portable compact form: An integrated carrying handle is mounted on the top of the aluminum alloy main unit, and the moderate overall weight allows easy handheld transport and quick relocation between different working sites.
Authorized Application Scenarios
This equipment is only permitted for deployment and operation by government, judicial, confidential security and other licensed institutions holding official radio regulatory approval documents. Valid applicable authorized confidential isolation scenarios include confidential meeting rooms, negotiation halls and classified office areas to block unauthorized Wi-Fi wireless hidden cameras and signal transmission; confidential law enforcement interrogation and investigation sites to cut off risks of wireless remote monitoring and data leakage; high-security confidential storage rooms and classified archives to prevent peeping via wireless cameras and signal outflow; as well as temporary authorized confidential inspection zones requiring full Wi-Fi signal isolation.
All usage scenarios must obtain formal written permits from national and local radio management authorities in advance. Private individuals and unlicensed commercial venues are strictly prohibited from purchasing, possessing or running this isolation device.
