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2.4 GHz 4dBi PCB antenna
Compact 2.4 GHz 4dBi PCB antenna for Wi-Fi, Bluetooth, Zigbee, and ESP modules—ideal for IoT, wireless, and embedded applications.
The 2.4 GHz 4dBi PCB Antenna is a compact, high-efficiency antenna designed for wireless communication in the 2.4 GHz ISM band. With a 4dBi gain, it provides improved signal strength and stable performance for short- to medium-range wireless applications.
This antenna is optimized for use with Wi-Fi, Bluetooth, Zigbee, ESP8266, ESP32, NRF24L01, and other 2.4 GHz RF modules. Its PCB-mounted design allows easy integration directly onto development boards or custom PCBs, making it ideal for space-constrained projects.
Featuring low VSWR and efficient radiation characteristics, the antenna ensures reliable data transmission while maintaining a compact footprint—perfect for IoT devices, smart home systems, wearables, and embedded wireless products.

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-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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