Function modules:
1. The computer serial port control to send and receive messages, send and receive GPRS data
2. The single chip microcomputer control to send and receive messages, send and receive GPRS data
3. The telephone type (no voice part can’t talk)
4. Ringing output
Current working voltage: 3.7-4.2 V 2 a
The default baud rate: 115200
The board preview:
SHENZHEN CAIZHIXING ELECTRONIC CO.,LTD is a leading independent distributor of electronic components in China,specializing in serving leading OEM/ODM/CEM electronic manufactures with supplying Active Parts (ICs, Memory, Chips, Diodes and Transistors etc.) and Passive parts (Capacitors, Resistors and Inductors etc.)…
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| Shipping Company |
Shipping Cost |
Estimated Delivery Time |
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|
3 - 7 days |
 |
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3 - 7 days |
 |
|
5 - 14 days |
| Post Air Mail |
Free Shipping |
15 - 45 days |
| Return Policy |
If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.
N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion. |
| Seller Service |
On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe). |
