Ebyte E310-900T23S AX5045 915MHz UART Module 23dBm 5.6km SMD

2024-06-28T01:36:23-07:00

廠商： LoRa Module Manufacturer Factory
類型： 电子元器件-无线及物联网
價格： 5.89 - 7.19 (3 variants)

E310-900T23S is a wireless serial module based on ON Semiconductor’s AX5045 narrow-band Sub-GHz RF transceiver. Operating at 900–931MHz (default 915MHz), it supports half-duplex transparent UART transmission, air wake-up (WoR, ultra-low power), relay mode for range extension, and configurable packet sizes (32/64/128/190 bytes). Designed for industrial-grade deployments at -40 to +85℃.

Technical Specifications

General & Hardware Parameters

Parameters | Description | Remark
IC | AX5045 | ON Semiconductor Sub-GHz narrow-band transceiver
Modulation | GFSK | —
Communication Interface | UART serial port | TTL 3.3V level, 1.27mm pitch
Packaging | SMD | —
Dimensions | 16 × 26mm | —
Antenna Interface | IPEX / Stamp Hole | ~50Ω impedance
Packet Size | 32 / 64 / 128 / 190 Bytes | Configurable via AT command
Buffer / Cache | 240 Bytes | —
Reference Distance | 5.6km | Open field, 5dBi antenna, 2.5m height, 1.2kbps

RF & Electrical Parameters

Parameters | Min. | Typ. | Max. | Remark
Working Voltage (V) | 2.3 | 5.0 | 5.5 | ≥3.3V required to guarantee rated output power
IO Level (V) | — | 3.3 | — | Add level shifter for 5V TTL systems
Working Frequency (MHz) | 900.0 | 915.0 | 931.0 | US915 ISM band
Transmit Power (dBm) | 21.5 | 23.0 | 23.5 | —
Receive Sensitivity (dBm) | -115 | -119 | -120 | @ 1.2kbps air rate
Air Rate (bps) | 1.2k | 1.2k | 125k | User-programmable
TX Current (mA) | — | 240 | — | Peak during transmission
RX Current (mA) | — | 13 | — | —
Sleep Current (μA) | — | 2 | — | Software shutdown (WoR mode)
Operating Temp (℃) | -40 | — | +85 | Industrial grade

Product Details

AX5045 Sub-GHz Narrow-Band RF — 23dBm, -119dBm Sensitivity, 5.6km

Built on ON Semiconductor’s AX5045, the E310-900T23S achieves 23dBm transmit power and -119dBm receive sensitivity at 1.2kbps — delivering a link budget of 142dB and 5.6km range in open field conditions. The narrow-band GFSK modulation provides superior co-channel rejection and spectral efficiency compared to wideband solutions, making it well-suited for dense IoT deployments in the US915 ISM band.

Half-Duplex Transparent UART — Plug-and-Play Serial Wireless Link

The E310-900T23S operates as a transparent UART serial port replacement — data sent to the TX pin is wirelessly transmitted and appears on the RX pin of the paired module, with no protocol stack or RF driver required on the host MCU. Supports baud rates from 1200 to 115200bps and configurable packet sizes (32/64/128/190 bytes) for latency vs. throughput optimization.

Air Wake-Up (WoR) — 2μA Sleep for Battery-Powered Nodes

WoR (Wake-on-Radio) mode reduces sleep current to 2μA, enabling multi-year battery life on AA or lithium primary cells. The receiver periodically wakes to scan for a preamble signal; when detected, it fully activates and receives the packet. This makes the E310-900T23S ideal for low-duty-cycle sensor nodes that transmit infrequently but must remain responsive.

Relay Mode — Range Extension Without Infrastructure

Built-in relay mode allows one or more E310-900T23S modules to act as transparent repeaters, extending effective communication range beyond the 5.6km direct link without additional gateways or network infrastructure. Relay nodes can be battery-powered using WoR mode, enabling flexible deployment in remote or difficult-to-wire locations.

Ideal Applications

Industrial Sensor Telemetry: Remote sensor data acquisition, PLC I/O extension, converter monitoring over US915 band

Smart Agriculture: Soil moisture nodes, weather stations, irrigation valve control across large fields

Smart Metering: Water, gas, electricity AMR nodes in 915MHz ISM band deployments

Asset Tracking & Logistics: Low-power tag nodes, warehouse inventory, fleet telemetry

Building & Infrastructure: Wireless sensor nodes, alarm relay, access control, streetlight monitoring

FAQ

Q: Is the E310-900T23S compatible with LoRaWAN networks?

A: No. The E310-900T23S uses ON Semiconductor AX5045 with GFSK modulation — it is not a LoRa (Semtech SX12xx) module and does not support LoRaWAN protocol. It operates as a transparent UART serial link with Ebyte’s proprietary addressing and WoR protocol. For LoRaWAN US915, consider Ebyte E22-900T22S or E77-900M22S.

Q: Can the E310-900T23S be powered from 5V?

A: Yes. The module supports 2.3–5.5V power supply, with ≥3.3V required to guarantee rated 23dBm output power. However, the UART IO level is 3.3V TTL — add a level shifter when connecting to 5V TTL microcontrollers to avoid IO damage.

Q: What is the maximum packet size and how does it affect latency?

A: Maximum packet size is 190 bytes (configurable to 32/64/128/190 via AT command). Smaller packets reduce over-the-air latency but increase protocol overhead per byte. For low-latency control applications, use 32-byte packets at higher air rates; for throughput-optimized sensor data, use 190-byte packets at 1.2kbps.

Q: How does relay mode work and how many relay hops are supported?

A: In relay mode, a designated E310-900T23S module automatically re-transmits received packets, extending range transparently. The number of supported relay hops depends on the network configuration and timing settings. Relay nodes can operate in WoR mode to minimize power consumption while maintaining relay functionality.

Q: What antenna options are available?

A: The module supports IPEX (U.FL) connector and stamp-hole pads (50Ω). Available bundle options: module only (E310-900T23S), module + FPC flexible antenna (TX915-FPC-8521), and module + IPEX rubber duck antenna (TX915-JKS-IPX20).