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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: TA
  • Model Number: TA521
  • Type: Handheld
  • Dimensions: 18*6.5*3cm
  • Frequency Range: 2402-2483.5MHz
  • Storage Channel: 83 channels
  • Talk Range: Long Range Walkie Talkies distance 300 meters
  • Receiver sensitivity: -100dBm
  • Radio Transceiver: Full Duplex
  • Handheld: team talk and listen at the same time
  • Voice Frequency: 300Hz ~ 3000Hz
  • Long Range Walkie Talkies: sample within 4 days
  • Full M Hz: 2.4~2.48GHz
  • AC/DC: AC/3.7V Li-ion battery-powered
  • Distance: more than 300 meters
  • Chip: high-performance IC
  • Outstanding: Outstanding

Packaging & Delivery

Packaging Details Long Range Walkie Talkies Sales Box: L*W*H=26cm*21cm*6cm Transport Carton: L*W*H=55cm*43cm*35cm NW: 8.918kg GW: 14.6332kg One set per box, 16 boxes in a carton
Delivery Time 7-20days after deposit .


Muti Full Duplex Security Guard Equipment Two Way Radio
-Talk & listen together
-4pack in a group
-AFH tech
-Referee KITS

Muti Full Duplex Security Guard Equipment Two Way Radio  



Full Duplex function:

Talk and listen at the same time ,

Without PTT button ,

Workable distance about 300M(master phone and extension phone)


AFH technology:

Adaptive Frequency Hopping when the channel disturb


Team working:

- 4 pack in a group

- 2 pack in a group

Suit for :Referee communication ,theater,horseback riding coach and outdoor working and so on .




wireless full duplex communication specification:


- latest long-distance wireless data Voice transceiver modules.

- latest high-performance RF radio chip and industrial-grade processing chip,

- Equipped with a small amount of external components,such as audio amplifier micro phone speakers etc,

- Used industrial-grade design standards.


Applicable Scope:

1) Electric power construction job site overhaul

2) Electricity System and equipment maintenance

3) Mining ,Construction  sites contact

4)  Army patrols communications

5)  Railway Construction Contact

6)  Oil Field Construction

7)  Golf Course intercom

8)  Airport personal deployment command

9)  Traffic Police on duty communication

10)  Police patrol communication

11)  Travel, sports, referee use


Radio Technique Parameter:


Machine A

Machine B

Battery capacity



Off status current



Operation current



Operation voltage



Transmitting power



Receiving sensitivity



Operation temperature




About 500 meters

Operation time

About 6 hours



How to code/program:

Important: the product have been programed/coded in factory, users no need to program again

1. In on status, press and hold the "Code" button till the red light twinkle then release, enter into coding status 

2. Try the other machine same as step 1

3. If Configure Code successful within 6 seconds, red light will twinkles three times and machine goes to synchronous mode, after synchronization then go to communication status.  



Low Battery:

 In standby status, if is low battery (red light twinkle prompt lower battery)   pls use USB cable charger charge the machine,  green light will light in charging status , green light will extinguish when the charging finished


Accssory list:



          Machine (master)


          Machine (extension)




          Lithium battery


















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