Free Shipping
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818
2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module - SA818

2 pcs/lot RDA1846S chip Embedded 1W UHF Walkie Talkie Module – SA818

21 orders
()
US $0.00 Free
15-50 días (Se envía dentro de los 7 días hábiles)
Total Price:
Best price guarantee
Quantity:
View cart
Buyer protection
Safe shopping
Easy returns and refunds
Free shipping worldwide

2 pcs SA818 high-integrated Embedded UHF VHF walkie talkie module

SA818 is a low cost but high performance integrated walkie talkie module.With built-in high performance microcontroller, narrow band rf transceiver and standard UART interface it can be easily used and succeed all the walkie talkie function with good quality voice and long distance transmission. Users only need to connect external audio amplifiers, microphone or speaker with this module ,then it can work as a small walkie talkie with 1W output. In open area, it can easily achieve 3.5 – 5Km communication. Simplified interface and ultra small size make this module a wide range of applications, also can conveniently embed into various handheld devices,to improve the comprehensive performance of end products.

Product Picture:

Electronic Specifications:

Parameter Test condition Min Typ Max Unit
Power supply 3.3 4.2 5.5 V
Working Temperature range -30 25 85 C
Current consumption
Sleep current @ PD = 0V ≤1 uA
RX current 60 mA
TX current(High power) 650 750 mA
TX current(low power) 450 550 mA
Transmitting RF parameters
Frequency range UHF 400 480 MHz
Frequency range VHF 134 174 MHz
Out power(High power) @ VCC=4.0V 28 29.5 31 dBm
Out power(low power) 25 26.5 27 dBm
Modulation frequency @ 1.5Khz/2.5KHz frequency deviation 10 mV
Audio modulation distortion @ 1.5Khz/2.5KHz frequency deviation 2 5 %
SignaltoNoiseRatio @ 1.5Khz/2.5KHz frequency deviation 38 40 45 dB
adjacent-channel power @ 12.5K offset -60dBc dBm
CTCSS Modulation frequency 0.35 0.5 0.75 KHz
Receiving RF parameters
Receiving sensitivity -124 dBm
Receiving SNR @ 1.5KHz frequency deviation 45 50 dB
Audio output amplitude 700 mV
Audio Output impedance 200 OHm

Pin NO. Pin name I/O state Description
1 Audio ON O

Connected to audio power amplifier. When the module worked, it can control the extra audio

amplifier automatically, it will output low level to turn on the amplifier and high level to turn off the amplifier.

2 NC Not connceted
3 AF_OUT Audio output
4 NC Not connceted
5 PTT I Module Input, Transmitting/receiving control, “0” force the module to enter TX state; and “1” to Rx state
6 PD I Power Down control, “0” for power down mode; “1” for the normal work
7 H/L I

high/low output power control; Leave open for high output power,low level to low output power.

(Please kindly note: this pin can NOT be connected to VDD or high level of cmos output)

8 VDD Connect power positive
9 GND Grounding
10 GND Grounding
11 NC Not connceted
12 ANT connect 50 ohm antenna
13,14,15 NC Not connceted
16 RXD I RXD of the module and connect to external TXD
17 TXD O TXD of the module and connect to external RXD
18 MIC_IN Microphone or line in

Features:

*Frequency: 400 ~ 480 MHz (UHF) or 134~174MHZ (VHF)

*Tx and Rx frequency, Tx and Rx CTCSS,CDCSS can be set alone.

*Band width 12.5/25KHz

*Output power up to 1 W

*Transmission distance up to 3.5 to 5 km in Open area

*Sensitivity: -124 dBm

*Small size

*Built-in EEPROM, data kept unchanged even powered off

*38 CTCSS

*166 CDCSS

*8 level squelch

*8 adjustable volume

*high/ low power is optional (500 mw)-1w

*wide range of working voltage 3.3 to 5.5 V

*1 ppm KDS TCXO crystal

Application:

*small walkie talkie

*Invisible intercom system

*Sport products

*building community security system

*audio surveillance system

Package included:

  • 2pcs UHF Walkie Talkie Module SA818

If you need VHF(134~174MHZ ) frequency, just leave message please.

Shipment: Free shipping by China post airmail

Brand Name:
G-NiceRF
Battery Capacity(mAh):
0
Origin:
CN(Origin)
Is_Display:
No
Waterproof / Water-Resistant:
No
Walkie Talkie Type:
Portable
Maximum Range:
3km-5km
Output Power(w):
0.5w-3w
Certification:
NONE
Model Number:
SA818
Frequency Range:
134 - 174MHz; 400 - 480MHz
Dimensions:
35.6*19*2.6mm
Storage Channel:
38 CTCSS ,166 CDCSS
Working Voltage:
3.3 ~ 5.5 V
RX current:
60mA
TX current (high power):
650~750 mW
Sensitivity:
-124 dBm
Tx and Rx frequency:
Tx and Rx CTCSS,CDCSS can be set alone
Band width:
12.5/25KHz
Output power:
up to 1 w
Transmission distance:
up to 3.5 to 5 km in Open area
TX current (low power):
450~550mW
frequency band:
UHF / VHF

SHIPPING AND DELIVERY

We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

REFUNDS & RETURNS POLICY

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.

Refunds

Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Buying & arriving (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of https://fastedoor.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.

Exchanges

If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

There are no reviews yet

Write a review
Please accept Terms & Conditions by checking the box
© Copyright {{2020}}. All Rights Reserved
fastedoor.com

Shopping cart

×