E01 2G4M20S1B 2G4GHz IoT Transceiver 20dBm PCB Antenna

Overview

The E01-2G4M20S1B is a compact 2.4 GHz IoT transceiver module engineered for reliable wireless communication in sensor networks, automation projects, and remote monitoring. With an integrated PCB antenna and up to 20 dBm transmit power, it delivers solid range while staying small enough for space‑constrained designs. It uses GFSK modulation and an SPI interface, making it easy to drop into microcontroller projects. The module features a 16 MHz crystal, a 32‑byte FIFO, and a robust operating temperature range for harsh environments.

Key benefits include straightforward integration, dependable 2.4 GHz operation, and a practical open‑air distance of up to 800 meters at a height of 2.5 meters with a data rate of 250 kbps. A 50 ohm PCB antenna ensures proper impedance matching for efficient transmission and reception.

Benefits & Tips

• Quick deployment for IoT projects: SPI interface with up to 10 Mbps supports fast data exchange with your microcontroller or MCU peripheral.
• Optimize power and range: Operate at 2.0–3.6 V with sleep current around 19–20 µA to extend battery life in sensor networks.
• Keep it safe and reliable: Use the module within its recommended limits (do not exceed 3.6 V supply; 3.3 V logic is preferred over 5 V TTL to avoid risking damage).

Product specifications

• Model: E01-2G4M20S1B
• Brand: CDEBYTE
• Frequency / Band: 2.4 GHz SMD Wireless IoT Transceiver
• Modulation: GFSK
• Communication interface: SPI (0–10 Mbps)
• Output power: 20 dBm
• Blocking power: -10 dBm
• Distance: up to 800 m (open air, height ~2.5 m, data rate 250 kbps)
• FIFO: 32 Byte
• Crystal frequency: 16 MHz
• Antenna: PCB antenna, 50 Ohm impedance match
• Size: 23 × 14 mm (with PCB antenna)
• Package: SMD
• Operating voltage: 2.0–3.6 V (typical 3.3 V)
• Operating temperature: -40 to 85°C
• TX current: ~135 mA
• RX current: ~20 mA
• Sleep current: ~19–20 µA
• Origin: Mainland China

Package Includes

• 1 × E01-2G4M20S1B 2.4 GHz IoT Transceiver Module

Warnings / Reminders

• Do not apply more than 3.6 V to the supply line to avoid permanent damage.
• For 5 V TTL interfaces, use proper level shifting or 3.3 V logic to prevent risk of burning the input.
• Range is specified under open, line‑of‑sight conditions; real‑world range may vary with environment and antenna setup.

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