NRF24L01 2.4GHz 2Mbit/s Wireless Data Transmission RF Transceiver Module
$0.75- Antenna: Built-in antenna
- Working temperature: -20 ~ 85
- Receiver sensitivity:-96dBm@250kbps
- Average transmitted current is as low as 25mA
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433Mhz RF Wireless Transmitter Module and Receiver Kit
$0.64- Frequency: 315MHz/433MHz
- Modulation: Amplitude Shift Keying (ASK)
- Power Supply: Typically operates at 3-12V DC
- Working current: 20-28mA
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HC-06 Bluetooth Module
$2.40- Bluetooth protocol: Bluetooth Specification v2.0+EDR
- Frequency: 2.4GHz ISM band
- Modulation: GFSK(Gaussian Frequency Shift Keying)
- Emission power: 4dBm, Class 2
- Sensitivity: -84dBm at 0.1% BER
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HC-05 Bluetooth module
$2.40- Bluetooth version: Bluetooth v2.0+EDR
- Default baud rate: 9600
- Sensitivity: ≤-84dBm at 0.1% BER