[IC]：AX5243
[Frequency]：400~525MHz
[Power]：17dBm
[Distance]：2000m
[Size]：14*20mm
[Weight]：1.35±0.1g
[Introduction]：E31-400M17S is a micro-size long range RF transceiving module with 400MHz central frequency;Based on AXSEM's AX5243 RF chip—a narrow-band multi-channel single-chip, the module has multiple modulation methods such as FSK / MSK / 4-FSK / GFSK.
Limit Parameters
| Main Parameters | Value | Remarks | |
| Min. | Max. | ||
| Input Voltage(V) | 0 | 3.6 | Permanent damage occurred when voltage is over 3.6V |
| Blocking Power(dBm) | - | 10 | Low chance to be damaged for short-distance transceiving |
| Working Temp.(℃) | -40 | +85 | Industrial Grade |
| Storage Temp.(℃) | -60 | +150 | - |
Working Parameters
| Main Parameters | Value | Remarks | |||
| Min. | Typical | Max. | |||
| Working Voltage(V) | 1.8 | 3.3 | 3.6 | DC 3.3V-3.6V can guaranty Max TX power | |
| Tx Electrical Level(V) | - | 3.3 | - | 5V TTL could cause permanent damage | |
| Working Temp(℃) | -40 | 25 | +85 | Industrial Grade | |
| Working Frequency Channel(MHz) | 400 | 433 | 525 | Applicable for ISM channel | |
| PowerConsumption | TX Current(mA) | 70 | 80 | 90 | Instantaneous power(could be different due to different Antenna performance) |
| RX Current(mA) | 12 | 13 | 14 | Current when module receiving data. | |
| Sleeping Current(μA) | 0.05 | 0.5 | 1 | Deep sleep at ultra low power consumption(low frequency) | |
| Max TX Power(dBm) | 16 | 17 | 18 | - | |
| RX Sensitivity(dBm) | - | -135 | - | At 0.1 kbps air rate | |
| Air Rate(kbps) | -120 | -121 | -122 | At 1.2kbps air rate(FSK/FEC) | |
| Air Rate Range | 0.1k | - | 125 | Adjustable by user | |
| Reference Tranceiving Range | 2000m | Conditions: Clear Sky, Antenna Gain 5dBi,Antenna Height 2.5m, Air rate 1.2kbps | |||
| FIFO | 256Byte | Max Length for single time transmitting | |||
| TCXO Frequency | 26MHz | ±1ppm | |||
| Protocol | GFSK(suggested) | FSK / MSK / 4-FSK / GFSK / GMSK / ASK / AFSK /FM / PSK | |||
| Encapsulation | SMD | / | |||
| Interface Type | 1.27mm | / | |||
| Communication Port | SPI | 0-10Mbps | |||
| Size | 20*14mm | / | |||
| Weight | 1.35±0.1g | / | |||
| Antenna Interfaces | IPEX/Stamp Hole | Stamp hole is suggested not to be connected when using IPX only, equivalent Impedance is around 50Ω | |||