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WT5518 LoRa Module

Overview

WT5518 integrates Semtech RF transceiver chip SX1276, which

adopts LoRa Spread Spectrum modulation frequency hopping technique.

Compare with the FSK and GFSK module, The WT5518 has extremely low

RX sensitivity to improve link performance. It can be widely used in

wireless meter reading, remote industrial control filed.

Features

 Frequency Range：915MHz

 Sensitivity up to -126dBm

 Maximum output power：18dBm±1dB

 Follow FCC15.247

 1.8-3.7 V Power supply

Summary of content (8 pages)

PAGE 1
WT5518 LoRa Module Overview WT5518 integrates Semtech RF transceiver chip SX1276, which adopts LoRa Spread Spectrum modulation frequency hopping technique. Compare with the FSK and GFSK module, The WT5518 has extremely low RX sensitivity to improve link performance. It can be widely used in wireless meter reading, remote industrial control filed. Features  Frequency Range：915MHz  Sensitivity up to -126dBm  Maximum output power：18dBm±1dB  Follow FCC15.247  1.8-3.
PAGE 2
 Ultra-low consumption shut down mode  Digital received signal strength indicator(RSSI)  Configurable date packet structure  Operating Temperature Range：-40 ~ +85°C Applications  Automated Meter Reading  Home and Building Automation  Wireless Alarm and Security Systems  Industrial Monitoring and Control  Long range Irrigation Systems Electrical Characteristics Test Conditions: TA = 25°C, 3.
PAGE 3
RX Current ≤14.5mA Sleep Current ≤1uA Working Voltage 1.8 ~3.7V Working Temperature -40°C~85°C Dimension 16.0*16.0*2.0mm Pin Definition Pin Name Pin Type Pin 3.
PAGE 4
Dimensions Accessory Parameter Value Part Number ANT-915-A1 Type Helical Spring Antenna Frequency range 800-960MHz standing-wave ratio (SWR) <2 Impendence 50 ohm The Max input Power 2W Gain 0 dbi Polarization Circular polarization Working Temperature -40°C~85°C Dimension φ5.5mm*17.
PAGE 5
Integration instructions Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 & 15.207 & 15.209 2.3 Specific operational use conditions The module is a module with LoRa functions. - Operation Frequency: 902-928MHz - Number of Channel: 1 - Modulation: FSK/GFSK/MSK/GMSK/LoRa/OOK - Type: Helical Spring Antenna - Gain: 0 dBi Max.
PAGE 6
2.5 Trace antenna designs Not applicable. The module has its own antenna, and doesn’t need a host’s printed board microstrip trace antenna etc. 2.6 RF exposure considerations The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users’ body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCCID or new application.
PAGE 7
2.9 Information on test modes and additional testing requirements Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc. According to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the product can be sold legally. 2.
PAGE 8
other antenna or transmitter. - This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Information for the OEMs and Integrators The following statement must be included with all versions of this document supplied to an OEM or integrator, but should not be distributed to the end user. 1) This device is intended for OEM integrators only. 2) Please see the full Grant of Equipment document for other restrictions installed .