Chengdu Ebyte Electronic Technology Co,;Ltd E32-DTU (433NW20) user manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd 2
1.Introduction
1.1. Brief Introduction
E64-DTU (433NW20) is suitable for low-power, main-multiple slave star networks. Its biggest feature is that it
supports up to 31 slave data to be sent to the host at the same time, and supports WOR working mode of slave, with a
minimum receiving power consumption of about 3mA. Data reliability and correctness are guaranteed by strict data
checking and automatic retransmission mechanism between master and slave.
The E64-DTU ((433NW20) module supports both host and slave modes. In the host mode, the module listens and
receives data from multiple slave machines. In slave mode, the user can set the module to work in WOR mode or send
mode. WOR mode allows the host to initiate data wake-up to the slave, while sending mode only allows the slave to
initiate data to the host.
The maximum transmission power of E64- (433NW20) module is 100mW, using command transmission mode,
operating at 425~ 451.3mhz. The module USES UART serial port to communicate with user MCU, and its working
voltage range is 8V~28V.
1.2. Features
★ All core components are originally imported; our transceiver modems have much advanced functions with smaller size
and lower cost.
★ The top TX power is 100mW, all technical parameters meet European industrial standards.
★ Temperature compensators are adopted to make the frequency stability better than ±1.5PPM.
★ Operation temperature range: -40℃～+85℃, applicable for various harsh environment, it is real industrial grade
products.
★ Aluminum alloy case, compact size, great heat dispersion; good shielding, prime electromagnetic compatibility and
strong anti-interference.
★ Power reverse & overload protection and antenna surge protection functions significantly improve the reliability.
★ Parameters can be configured by programming, such as TX power, frequency point, air data rate, address and so on.
★ Ultra-low power consumption, standby current is only 14mA (even lower under power-saving and sleep modes), TX
current ≤0.13A.
★ Embedded watch-dog and precise time layout, modem will restart automatically upon abnormal situation and work
with previous parameters.
★ The transceivers adopt original SEMTECH SX1278 chip, customers highly comment the products because of the
super reliability.
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