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wireless serial port module UART TTL level output compatible with 3.3V and 5V IO port voltage







[Introduction]:E22-400T22D is a wireless serial port module (UART) based on SEMTECH's SX1268 RF chip. It has multiple transmission modes, working in the 410.125MHz~493.125MHz, frequency (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.

Main ParametersValueRemarks
Power supply(V)05.5Voltage over 5.5V will cause permanent damage to module
Blocking power(dBm)-10Chances of burn is slim when modules are used in short distance
Operating temperature(℃)-40+85Industrial grade

Main ParametersValueRemarks
Operating voltage(V)≥5.0 V ensures output power
Communication level(V)-3.3-For 5V TTL, it may be at risk of burning down
Operating temperature(℃)-40-85Industrial design
Operating frequency(MHz)410.125433.125493.125Support ISM band
TX Current(mA)-110-Instant power consumption
RX current(mA)-12--
Sleep current(μA)-2-Software is shut down
Max Tx power(dBm)21.522.022.5-
Receiving sensitivity(dBm)-146-147-148Air data rate is 0.3 kbps
Air data rate(bps)0.3k2.4k62.5kControlled via user’s programming

Main parameterDescriptionRemarks
Distance for reference5kmTest condition:clear and open area, antenna gain: 5dBi,antenna height:2.5m,air data rate: 2.4kbps
TX length240 ByteCan be configured via command as 32/64/128/240 bytes per packet totransmit
Buffer1000 Byte-
ModulationLoRaNew generation LoRa modulation technology
Communication interfaceUARTTTL level
Size21*36 mm-
AntennaSMA50 ohm impedance