2pcs/1pc HC-12 433Mhz SI4438 Wireless Serial Port Module 1000m UART 3.3V/5V TTL Level With Antenna Replace Bluetooth-compatible
USD 2.04USD 2.84
2pcs/1pc HC-12 433Mhz SI4438 Wireless Serial Port Module 1000m UART 3.3V/5V TTL Level With Antenna Replace Bluetooth-compatible