Chengdu Ebyte Electronic Technology Co., Ltd.
E22-900T22S1C User manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1.3 Application
Home security alarm and remote keyless entry；
Smart home and industrial sensors；
Wireless alarm security system；
Building automation solutions；
Wireless industrial-grade remote control；
Health care products；
Advanced Meter Reading Architecture(AMI)；
Automotive industry applications.
1.4 Function introduction
LoRa spread spectrum
: LoRa direct sequence spread spectrum technology will bring longer communication distance;
low transmit power density, it is not easy to cause interference to other equipment.
High confidentiality
, extremely low probability of interception; strong anti-interference ability, strong suppression of
co-channel interference and various noises; excellent anti-multipath fading performance.
LBT
: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors the
channel environment noise before transmitting. If the noise exceeds the threshold, it will be sent delayed. This feature can
greatly improve the communication success rate of the module in harsh environments. This function can be used for
network transmission and anti-collision processing.
RSSI:
The signal strength indication function. The module supports packet signal strength serial output. Can be used to
assess signal quality, improve communication networks, and ranging. The module supports ambient noise signal strength
serial output. It can be used to implement LBT functions manually.
Wireless configuration
: Remotely configure or read wireless module parameters by sending command packets
wirelessly.
Networking function
: The module can implement multi-level repeater networking. Multi-level repeater is suitable for
ultra long-distance communication. Multiple networks in the same area can run simultaneously.
Ultra-low power consumption
: the air wake-up function. It is especially suitable for battery-powered applications: when
the module is in WOR state, the configuration module WOR monitors the overall power consumption of the adjustable
module. The maximum configurable response delay of the module is 4000ms. The average current of the module in this
mode is about 2uA.
Fixed-point transmission
: supports address function, the host can transmit data to any address, any channel, to achieve
networking, repeater and other application. For example: module A transmits data to module B (address is 0x00 01,
channel is 0x80), date is AA BB CC, the communication format is: 00 01 80 AA BB CC, where 00 01 is the module B address
and 80 is the module B channel, then module B can receive the AA BB CC (other modules do not receive data).
Broadcast monitoring
: Set the module address to 0xFFFF, which can monitor the data transmission of the module on the
same channel; the transmitted data can be received by the module of any address on the same channel, thus playing the
role of broadcasting and monitoring.
