Section: Technical Resources / Component Selection
When choosing between the E52-400NW30S and E52-900NW30S, aside from the frequency band, almost all technical parameters are identical. Here's a detailed comparison table based on the datasheet:
Core Parameter E52-400NW30S E52-900NW30S
Frequency Band 410.125~509.125 MHz 850.125~929.125 MHz
Default Frequency 433.125 MHz 868.125 MHz
Transmit Power 30dBm (1W), user adjustable 30dBm (1W), user adjustable
Air Data Rate 7K / 21.875K / 62.5K bps (3 levels) Same
Receive Sensitivity -121dBm @7K -121dBm @7K
Reference Range 4.0 km (open area, 7K, 3.5dBi antenna) 4.0 km (open area, 7K, 3.5dBi antenna)
Operating Voltage 3.3~5.5V (≥5.0V for full power) 3.3~5.5V (≥5.0V for full power)
Transmit Current 710 mA (instantaneous) 710 mA (instantaneous)
Receive Current ~14 mA ~14 mA
Interface UART (3.3V TTL) UART (3.3V TTL)
Max Baud Rate 460800 bps 460800 bps
Single Packet Size 200 Bytes 200 Bytes
Antenna Interface IPEX / Stamp Hole (50Ω) IPEX / Stamp Hole (50Ω)
Dimensions 40.5 × 25.0 mm 40.5 × 25.0 mm
Operating Temp -40℃ ~ +85℃ (industrial) -40℃ ~ +85℃ (industrial)
Selection Guide:
China & European markets: Choose the E52-400NW30S (433MHz band). This band has better diffraction capability, ideal for environments with many obstacles.
North America & Asia-Pacific markets: Choose the E52-900NW30S (868/915MHz band), compliant with local ISM band regulations.
Parameter tuning: For maximum range, set the air data rate to 7Kbps and lower the baud rate. For higher throughput, set the rate to 62.5Kbps, but range will drop to approximately 1.6km.
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