SA818 Wireless Walkie Talkie Module UHF 400-480 MHz Audio Module
| Parameter | Test Conditions | MIN. | Typical | MAX. | UNIT |
| Operating voltage range | 3.3 | 4.2 | 5.5 | V | |
| Operating temperature range | -30 | 25 | 70 | ℃ | |
| Current consumption | |||||
| Sleep current | ≤1 | uA | |||
| Receiving current | 60 | mA | |||
| Emission current (high power) | 650 | 750 | mA | ||
| Emission current (low power) | 450 | 550 | mA | ||
| Emission frequency parameter | |||||
| Operating frequency range | UHF (this item) | 400 | 480 | MHZ | |
| Operating frequency range | VHF (ID:1441651) | 134 | 174 | MHZ | |
| Transmit power (high power) | @VCC=4.0V | 28 | 29.5 | 31 | dBm |
| Transmit power (low power) | 25 | 26.5 | 27 | dBm | |
| Modulation sensitivity | @1.5Khz/2.5KHZ frequency offset | 10 | mV | ||
| Audio modulation distortion | @1.5Khz/2.5KHZ frequency offset | 2 | 5 | % | |
| Signal to noise ratio | @1.5Khz/2.5KHZ frequency offset | 38 | 40 | 45 | dB |
| Adjacent channel power | @12.5K offset | -60dBc | dBm | ||
| CTCSS modulation frequency offset | 0.35 | 0.5 | 0.75 | KHZ | |
| Receiving radio frequency parameter | |||||
| Receiving sensitivity | 13dB output voice signal ratio | -124 | dBm | ||
| Receive signal to noise ratio | @1.5KHZ frequency offset | 45 | 50 | dB | |
| Audio output amplitude | 700 | mV | |||
| Audio output impedance | 200 | OHm | |||
- Description
Introduction:
SA818 is a cost-effective integrated professional walkie-talkie module with built-in high-speed microcontroller, high-performance RF transceiver chip and RF power amplifier, and provides standard TTL serial port to communicate with the module, which can quickly and easily set the relevant parameters of the module and Transceiver function for control. Users only need to connect an audio amplifier, microphone, and speaker to this module to work as a small walkie-talkie. The simplified interface and ultra-small size make this module widely available, and can be easily and quickly embedded in various handheld devices to improve the overall performance of the terminal products.
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- Q & A
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: Where is the origin of Elecbee products? Are they certificated?2023-03-03
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Answer:
Elecbee has long-term cooperation agreements with the OEM factories in China. So that we are able to reduce the intermediate channel cost, and help you save money. Our products are all made strictly according to the relative global standard, to ensure the products have good compatibility and excellent quality.
2023-03-03
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: What forms of payment do you accept?2023-03-03
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Answer:
Our main payment methods include Paypal, Credit Cards, Debit Cards, Bank Transfer, and more to discover. Please choose the payment methods in your favor.
2023-03-03
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: When will you arrange shipment?2023-03-03
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Answer:
After confirming receipt of your payment. We will arrange the delivery as soon as possible and upload the courier number to the website for you to track.
2023-03-03
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: How to exchange or return?2023-03-03
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Answer:
1. You can apply to return within 30 days after receipt of the goods. Please make sure the outside package is intact, and the product is in its original condition. We will arrange your refund according to the relevant provisions once the package is received.
2. Return process: You Apply for a Return - Approve the Return - Arrange a Return - Receive the Products and make Inspection - We arrange a Refund;
3. We will bear the freight charges for returns caused by us, for instance, the quality problem. As to returns caused by the buyer, the buyer should be responsible for the shipping fee.
2023-03-03
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