Dongguan TA-RF Security Electronic Technolog Co., Ltd

12 years experience in manufacturing high quality wireless doorphone

and  full duplex walkie talkie, also offer wirless technology solutions 


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HomeProductsFull Duplex Walkie Talkie

Long Distance Digital Full Duplex Walkie Talkie

Good Quality Wireless Video Doorphone on sale
Good Quality Colour Video Doorphone on sale
The wireless door phone is greeat ,I like it

—— Alice

It is nice ,it will be more better ,if the wireless range is longer


hellohow much is this product, 1 unit only? and how much is the shipping fee to the philippines?

—— mary jane kimura

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Long Distance Digital Full Duplex Walkie Talkie

Large Image :  Long Distance Digital Full Duplex Walkie Talkie

Product Details:

Place of Origin:Dongguan, china
Brand Name:TA
Model Number:TA-521

Payment & Shipping Terms:

Minimum Order Quantity:30pcs
Price:Depends on product and order quantity
Packaging Details:Color box or Luxury sport package
Delivery Time:3-5 days by DHL, UPS, Fedex
Payment Terms:T/T, Western Union, Paypal
Supply Ability:200pcs/day
Detailed Product Description

1.Frequency Range: 2402~2483MHz

2.Storage Channel: 83channels

3.Talk Range: Over 500m

4.Battery: Rechargeable li-ion

5.Operating power: DC 3.7V

6.Current: 150mA

7.Main function: 4 referees communication

8.Transimit power: 20dBm

9.Received sensibility: -100dBm


Long Distance Digital Full Duplex Walkie Talkie Small 83ch For Team Work




Full-duplex Long Distance Walkie Talkie For Team Work    



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:


-Widely Use: Film, Security, Sport, Hospitality, Construction

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 Contact
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 in open land

Operation time

About 6-8 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




           Leather Case


Long Distance Digital Full Duplex Walkie Talkie

Long Distance Digital Full Duplex Walkie Talkie

Long Distance Digital Full Duplex Walkie Talkie

Contact Details
TA-RF Security Electronic Technology Co.,Ltd

Contact Person: Mr. Andy Yam



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