HC-12 Long Range 100 Channel (1km) Transparent Wireless Serial Transceiver

Easy to use wireless serial UART conversion kit. Suitable for serial communications not requiring hardware handshakes.

Supply Voltage: 3.2-5.5V (See note 1)
Frequency: ISM 433.4-473.0 MHz 100Ch program selectable
RF Output Power: 100mW max. program adjustable
Typical Control Distance: 600M-1km (Note 2)
RF Chip: Si4463
Configuration: AT command Set
Baud Rate: 1200-115200bps

Defaults:
Frequency: CH001 433.4MHz
Baud Rate: 9600 bps

Pinout:
SET - Enter Command Mode when driven Low
TXD - Transmit Output
RXD - Receive Input
GND
VCC -3.2V to 5V

Notes:
1. The on-board regulator tends to shut down (due to high temperature) when the supply voltage goes up to more than 4.5V. The manufacturer recommends putting a diode in series with the VCC pin as a workaround.

2. Actual transmission distance vary according to environmental conditions and baud rate. High baud rate (>4800) results in shorter range.

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