資料來源:https://www.seeedstudio.com/420-450MHz-Ultra-low-power-data-radio-module-p-2209.html
WT-800T is a high performance, low power, long-range wireless data micro-power RF transceiver module, internal automatic spreading calculation and preamble CRC error correction processing, without changing the user’s any data and protocols, using a half-duplex transparent transport mechanism to achieve wireless communicate function.
The RF chip of Module is based on spread spectrum frequency hopping technology, the stability, anti-interference ability and receive sensitivity are beyond existing GFSK module. Configured of Low-power high-speed ST processor, data processing capacity, the operation speed are improved.
Users can configure our PC software, or by microcontroller commands, according to the actual demand, flexible configuration module working frequency, baud rate / parity, spreading factor, spread spectrum bandwidth and other parameters, simple operation, easy to use .
Features
Ø Based on LoRa TM spread spectrum modulation techniques.
Ø Half-duplex communications, serial data transparent transmission.
Ø 420~450MHz, Free application band, the other band can be customized.
Ø Produce without debugging, 3.4-5.5V voltage range, can be customized 3.0-3.6V.
Ø Micro-power transmission, standard + 20dBm output, seven adjustable levels.
Ø Receiving sensitivity up to -148dBm, the maximum transmit power + 20dBm.
Ø High-efficiency forward error correction coding techniques and frequency hopping mechanism, enhance the anti-interference ability and reduce the error rate.
Ø Supports serial wake, ready to send and receive data, no periodic wake-up time.
Ø Support air wake, AUX signal can be given via the module, Wake user device.
Ø CAD detection LoRaTM signal, to prevent accidental wake.
Ø Can work through the command switch module supports serial wake up, ready to send and receive data, no periodic wake-up time.
Ø Flexibility to set the module parameters via software or microcontroller commands.
Ø Small size, easy for embedded installation, TTL level signals
Ø Built-in watchdog to ensure long-term reliable and stable operation。
Ø Effective communication distance up to 3 to 5 km in the open field.
Specification
ELECTRICAL SPECIFICATIONS:
Mod: LoRaTM Spread spectrum
Frequency range: 420~450MHz (Other bands can be customized)
Transmit power: 20dBm
Reception sensitivity: -148dBm
Serial rate: 1200bps~57600bps (default 9600bps)
Interface verification: 8E1/8O1/8N1( Optional)
Operating Voltage: 3.5V~5.5V( 3.0V~3.6V can be customized) (output +20dBm)
Emission current: 100mA (Transmit power +20dBm)
Receiving current: ≤16mA
Low current mode: ≤41uA
Sleep mode: ≤4.5uA
Client wake-up time: Right now
Air wake-up time: ≤2S
Working temperature: -40℃~+80℃ (industrial level)
Working humidity: 10%~90% Relative humidity, without condensation
Application:
Smart home, intelligent transportation, sensor networks;
Industrial automation, modernization of agriculture, intelligent building;
Water, electricity, gas and heating meter automatic meter reading system;
Water conservancy, oil, mines, weather and other device information collection;
Street lighting control, network monitoring, wind and solar systems;
Industrial equipment, wireless data transmission and industrial environmental monitoring;
In all cases require additional wireless instead of wired communications.
WT-800T是一個高性能,低功耗,遠距離無線數據微功率RF收發器模塊,內部自動擴頻計算與前導碼CRC錯誤校正處理中,在不改變該用戶的任何數據和協議,使用半雙工透明傳輸機制來實現無線通信的功能。
模塊的射頻芯片是基於擴頻跳頻技術,穩定性,抗干擾能力強和接收靈敏度超出了現有的GFSK模塊。配置低功耗高速處理器,ST,數據處理能力,運算速度都有所提高。
用戶可以配置我們的PC軟件,或者通過微控制器的命令,根據實際需求,靈活配置模塊的工作頻率,波特率/奇偶校驗,擴頻因子,擴頻帶寬等參數,操作簡單,使用方便。
特徵
規範
電氣特性 :
MOD:LoRaTM擴頻
頻率範圍:420〜450MHz的(其它頻段可定制)
發射功率:20dBm的
接收靈敏度:-148dBm
串口速率:1200BPS〜57600bps(默認為9600bps)
接口驗證:8E1 / 8O1 / 8N1(可選)
工作電壓:3.5V〜5.5V(3.0V〜3.6V可定制)(輸出+ 20dBm的)
發射電流:100mA(發射功率或+ 20dBm)
接收電流:≤16mA
低電流模式:≤41uA
睡眠模式:≤4.5uA
客戶端喚醒時間:現在
空氣喚醒時間:≤2S
工作溫度:-40℃〜+ 80℃(工業級)
工作濕度:10%〜90%相對濕度,無冷凝
應用 :
智能家居,智能交通,傳感器網絡;
工業自動化,農業,智能建築的現代化;
水,電,氣,熱表自動抄表系統;
水利,油田,礦井,氣象等設備信息收集;
街道照明控制,網絡監控,風能和太陽能系統;
工業設備,無線數據傳輸和工業環境監測;
在所有情況下需要額外的無線代替有線通信。