433Mhz Wireless Serial Transceiver Module - 1 Kilometer

Model No: WIR-00040

TK. 1450.27


Category: RF

Supplier: Seeed Studio, China

HC-12 wireless serial port communication module is a new-generation multichannel embedded wireless data transmission module. Its wireless working frequency band is 433.4-473.0MHz, multiple channels can be set, with the stepping of 400 KHz, and there are totally 100 channels. The maximum transmitting power of module is 100mW (20dBm), the receiving sensitivity is -117dBm at baud rate of 5,000bps in the air, and the communication distance is 1,000m in open space. 

The module is encapsulated with stamp hole, can adopt patch welding, and its dimension is 27.8mm×14.4mm×4mm (including antenna cap, excluding spring antenna), so it is very convenient for customers to go into application system. There is a PCB antenna pedestal ANT1 on the module, and user can use external antenna of 433M frequency band through coaxial cable; there is also an antenna solder eye ANT2 in the module, and it is convenient for user to weld spring antenna. User could select one of these antennas according to use requirements. 
There is MCU inside the module, and user don’t need to program the module separately, and all transparent transmission mode is only responsible for receiving and sending serial port data, so it is convenient to use. The module adopts multiple serial port transparent transmission modes, and user could select them by AT command according to use requirements. The average working current of three modes FU1, FU2 and FU3 in idle state is 80μa, 3.6mA an 16mA respectively, and the maximum working current is 100mA (in transmitting state). 

Click here to know more about this product. 

  • Working frequency: 433.4MHz to 473.0MHz
  • Supply voltage: 3.2V to 5.5VDC
  • Communication distance: 1,000m in the open space
  • Serial baud rate: 1.2Kbps to 115.2Kbps(default 9.6Kbps)
  • Receiving sensitivity: -117dBm to -100dBm
  • Transmit power: -1dBm to 20dBm
  • Interface protocol: UART/TTL
  • Operating temperature: -40℃ to +85℃
  • Dimensions: 27.8mm x 14.4mm x 4mm

Question & Answer

Total 5 questions

Q: It says "Transceiver Module ", meaning 1 single module serves as both transmitter and receiver, right ? Which means, if I buy, I need to buy a pair for a full-duplex communication ? Questioned by suntop, 25-Feb-2015

Q: I need to Transmit a serial data from my laptop to a pic16f877a MCU without wire.could u please tell me this product is suitable for me or not? Questioned by ismailzumman, 17-Mar-2015

This one will work. Answered by A.R, 18-Mar-2015 09:39 AM

Q: I baught a pair of this module and I can transmit data only in the default setting of this module (which is 9600 baud, 8bit, No Parity, 1 Stop bit). I cannot change the default configuration of this module through AT commands which is mentioned in the datasheet. I am using a USB to TTL converter for connecting this module to PC but I only get ERROR when I send anything to the module. Could you please tell me how can i change the default configuration of this module? Questioned by sesakib, 20-May-2015

Q: can i use this for audio communication Questioned by MdMaruf, 21-Apr-2017

No. Answered by A.R, 22-Apr-2017 10:04 AM

Q: eta kokhon asbe? R eta diye ki indoor 250m a kaj korbe...ami calling bell banate chai...pls janaben.. Questioned by sumonahmed, 30-Apr-2017

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