Ebyte E49-400T20D User manual

E49-400T20D User Manual
433MHz DIP Wireless Module

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T20D User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
CONTENTS
1. OVERVIEW..................................................................................................................................... 3
1.1 INTRODUCTION.............................................................................................................................................................. 3
1.2 FEATURES......................................................................................................................................................................3
1.3 APPLICATION................................................................................................................................................................. 3
2. SPECIFICATION AND PARAMETER........................................................................................4
2.1 LIMIT PARAMETER.........................................................................................................................................................4
2.2 OPERATING PARAMETER................................................................................................................................................4
3. SIZE AND PIN DEFINITION........................................................................................................5
4. CONNECT TO MCU.......................................................................................................................6
5. FUNCTION DESCRIPTION..........................................................................................................7
5.1 MODULE RESET............................................................................................................................................................. 7
5.2 AUX DESCRIPTION........................................................................................................................................................ 7
5.2.1 Wireless receiving indication................................................................................................................................. 7
5.2.2 Wireless transmission indication........................................................................................................................... 7
5.2.3 Reset and exit sleep mode...................................................................................................................................... 8
5.3.4 Notes for AUX........................................................................................................................................................ 8
5.3.5 Fixed-point mode description................................................................................................................................ 8
5.3.6 Broadcast transmission.......................................................................................................................................... 9
5.3.7 Broadcast address............................................................................................................................................... 9
5.3.8 MONITOR ADDRESS..............................................................................................................................................9
6. OPERATING MODE....................................................................................................................10
6.1 MODE SWITCHING........................................................................................................................................................10
6.2 TRANSMISSION MODE（MODE 0）.............................................................................................................................11
6.3 RSSI MODE（MODE 1）............................................................................................................................................11
6.4 SETTING MODE（MODE 2）...................................................................................................................................... 11
6.5 SLEEP MODE（MODE 3）.......................................................................................................................................... 12
6.6 FAST COMMUNICATION TEST.......................................................................................................................................12
7. COMMAND FORMAT.................................................................................................................13
7.1 FACTORY DEFAULT PARAMETER..................................................................................................................................13
7.2 READING OPERATING PARAMETER..............................................................................................................................13
7.3 VERSION NUMBER READING........................................................................................................................................13
7.4 PARAMETER SETTING COMMAND................................................................................................................................ 14

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8. HARDWARE DESIGN................................................................................................................. 16
9. FAQ................................................................................................................................................. 17
9.1 COMMUNICATION RANGE IS TOO SHORT................................................................................................................... 17
9.2 MODULE IS EASY TO DAMAGE.................................................................................................................................... 17
9.3 BER(BIT ERROR RATE)IS HIGH............................................................................................................................... 17
10. WELDING GUIDANCE............................................................................................................. 18
10.1 REFLOW SOLDERING TEMPERATURE.........................................................................................................................18
10.2 REFLOW SOLDERING CURVE..................................................................................................................................... 18
11. RELATED MODEL.....................................................................................................................19
12. ANTENNA GUIDANCE........................................................................................................... 19
12.1 ANTENNA RECOMMENDATION................................................................................................................................... 19
13. BATCH PACKAGING................................................................................................................20
REVISION HISTORY....................................................................................................................... 20
ABOUT US......................................................................................................................................... 20

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T20D User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1. Overview
1.1 Introduction
E49-400T20D is an ultra-high cost-effective wireless module
developed by Chengdu Ebyte. There are 4 operating modes. Each
transmission mode has its own characteristics and can be applied
to various application scenarios. E49-400T20D perfectly supports
industrial-grade applications, and undergoes rigorous testing at
factory to ensure its industrial reliability and batch consistency.
E49-400T20D supports a maximum transmission power of
20dBm. Users can set a lower output power to save power
consumption. The module works at 433MHz, with TTL level output, and is compatible with 3.3V.
The module has data encryption function. The data transmitted by the module in the air is random. Through strict
encryption and decryption algorithms, the data interception is meaningless, the probability of interference is reduced, and
the reliability and transmission efficiency are improved. Besides, it is a low-cost wireless serial transceiver module.
1.2 Features
The measured communication distance is up to 1km;
Maximum transmit power is 100mW, software can be adjusted at multiple levels;
The global license-free ISM 433MHz frequency band;
Data transmission rate :1.2Kbps～200Kbps;
Low power consumption mode, suitable for battery application;
Advanced ultra-narrowed GFSK modulation;
2.6V~3.3V power supply;
Industrial-grade standard design for long-term use of -40 ~ 85°C;
SMA antenna interface.
1.3 Application
Wearable devices;
Smart home and industrial sensors;
Security system, Positioning system;
Wireless remote control, unmanned drone;
Wireless game remote control;
Health care product；
Wireless voice, wireless headphones;
Automobile industry application.

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2. Specification and parameter
2.1 Limit parameter
Main parameter
Performance
Remark
Min.
Max.
Power supply（V）
0
3.3
Voltage over 5.5V will cause
permanent damage to the module
Blocking power（dBm）
-
10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
80
2.2 Operating parameter
Main parameter
Performance
Remark
Min.
Typ.
Max.
Operating voltage（V）
2.6
3.3
3.6
Communication level（V）
3.3
Operating temperature（℃）
-40
-
80
Industrial design
Operating frequency（MHz）
410
433
510
Support ISM band
Power
consumption
TX current（mA）
75
Instant power consumption
RX current（mA）
12
Sleep current（μA）
0.7
Software is shut down
Max Tx power（dBm）
-
-
20.0
Receiving sensitivity（dBm）
-116
-117
-117
Air data rate is 1.2kbps
Air data rate（bps）
1.2k
2.4k
200k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
1000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 1.2kbps
Sub-packet
54 Byte
The maximum capacity of a single package is automatically
packed after exceeding.
Buffer
500 Byte
Modulation
GFSK
Communication interface
UART
Package
DIP
Connector
2.54mm pin header
Size
36*21mm
Antenna
SMA
50 ohm impedance

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3. Size and pin definition
Pin No.
Pin item
Pin direction
Application
1
M0
Input
（weak pull-up）
Work with M1 to decide 4 working modes of module (can be suspended, internal
pull-up resistor).
2
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (can be suspended, internal
pull-up resistor).
3
RXD
Input
TTL UART input, connects to external TXD output pin.

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4
TXD
Output
TTL UART output, connects to external RXD input pin.
5
AUX
Output
To indicate module ’ s working status & wakes up the external MCU. During the
procedure of self-check initialization, the pin outputs low level.
6
VCC
Module power supply positive reference, voltage range: 2.6V ~ 3.3V DC
7
GND
Ground
8
GND
Ground
9
GND
Ground
10
GND
Ground
4. Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level, please connect with TTL level MCU.
2
For some MCU works at 5V DC, it may need to add 4～10K pull-up resistor for the TXD & AUX pin.

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5. Function description
5.1 Module reset
When the module is powered on, AUX outputs low level immediately, conducts hardware self-check and sets the
operating mode based on user’s parameters. During the process, the AUX remains low level. After the process completed,
the AUX outputs high level and starts to work as the operating mode combined by M1 and M0. Therefore, users need to
wait the AUX rising edge as the start of module’s normal work.
5.2 AUX description
AUX P is used as indication for wireless sending & receiving buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been
sent through UART, or whether the module is still in the process of self-check initialization.
5.2.1 Wireless receiving indication
After receiving the valid wireless data, the module will immediately pull AUX low and start UART to output data
and then pull up AUX after the data output is completed.
5.2.2 Wireless transmission indication
After receiving the serial port data, the module will immediately pull down AUX and start sending data wirelessly
and after all the data is sent, pull up AUX.

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5.2.3 Reset and exit sleep mode
Only when resetting and exiting sleep mode
5.3.4 Notes for AUX
The function 1 and function 2 mentioned above have low output priority, that is, if any output low condition is met,
AUX outputs a low level; when all low level conditions are not met, AUX outputs a high level.
When the AUX output is low, it indicates that the module is busy, and the operating mode detection will not be
performed; when the AUX output is high, the mode switching will be completed.
When users enter other modes from mode 3 (sleep mode) or during the reset process, the module will reset user
parameters, during which AUX outputs low level.
5.3.5 Fixed-point mode description

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5.3.6 Broadcast transmission
5.3.7 Broadcast address
Example:
Set the address of module A to 0xFFFF and the channel to 0x04
When module A is used for transmission (same mode, transparent transmission mode), all receiving module
under the 0x04 channel can receive data to achieve the purpose of broadcasting.
5.3.8 Monitor Address
Example: Set the address of module A to 0xFFFF and the channel to 0x04.When module A is used as a receiver, it
can receive all the data under the 0x04 channel to achieve the purpose of monitoring.

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6. Operating mode
There are four operating modes, which are set by M1 and M0, the details are as follows:
Mode(0-3)
M1
M0
Description
Remark
0 Transmission
mode
0
0
UART and wireless channel are open, the module performs data
transmission according to the set transmission mode
The transmission
method of the sender
and receiver must be
consistent
1 RSSI mode
0
1
Wireless off and UART opens, the module outputs RSSI signal
strength value at 100ms timing
Relative intensity
values only
2 Setting mode
1
0
Wireless off, can receive UART command, refer to Command List,
fixed baud rate is 9600，8N1
Parameter
configuration
3 Sleep mode
1
1
The module goes to sleep standby mode, and the serial UART and
wireless are turned off.
Ultra-lower power
consumption sleep
6.1 Mode switching
Users can combine M0 and M1 with high and low levels to determine the operating mode of the module. Users
can use the MCU’s 2 GPIOs to control the node switching; after changing M0,M1: the module is idle and after 1ms, it
can start working according to the new operating mode; if the module has not transmitted serial port data via wireless,
then entering the new operating mode after the transmission completed; if the module receives the wireless data and
sends out the data through the serial port, it needs to finish sending before entering the new operating mode; if the
module; so the mode switching can only be effective when AUX outputs 1, otherwise the switch will be delayed.
For example: In mode 0, the user continuously inputs a large amount of data and switches the mode at the same
time. The mode switching operation is invalid at this time; the module will process all the user data before performing the
new mode detection; so the general recommendation is: Detect the AUX pin output status, wait for 2ms after the AUX
output goes high before switching.
When the module is switched from other modes to sleep mode, if any data has not been processed, the module will
enter the sleep mode after processing the data(including receiving and sending). This feature can be used for fast
sleep mode to save power consumption; for example: the transmitter module works in mode0, the user initiates serial
data "12345",and then does not have to wait for the AUX pin to be idle (high level),and can directly switch to sleep mode,
And the user's main MCU will immediately sleep, the module will automatically send all user data through wireless, and
automatically enter sleep within 1ms; thus saving the MCU's working time and reducing power consumption.
Similarly, any mode switch can use this feature. After processing the current mode event, the module will
automatically enter the new mode within 1ms; thereby eliminating the user's query of AUX and achieving the goal of fast
switching ,For example, switching from the transmission mode to the setting mode; the user MCU can also go to sleep
mode in advance before the mode switching, and use the external interrupt function to obtain the AUX change to
perform the mode switching.
This operation mode is very flexible and efficient. It is designed in accordance with the convenience of the user
MCU, and can reduce the workload of the entire system as much as possible, improve system efficiency and reduce
power consumption.

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6.2 Transmission mode（Mode 0）
Type
M0 = 0，M1 = 0
Transm
itting
The module receives user data from the serial port, the maximum length of the wireless data packet transmitted
by the module is 54 bytes, when the amount of user input data reaches 54 bytes, the module will start wireless
transmission. At this time, the user can continue to enter the data that needs to be transmitted.
When the user needs to transmit less than 54 bytes, the module waits for about 20ms. If there is no user data to
continue to input, the data is considered to be terminated. At this time, the module sends all data via wireless.
When the module receives the first user data, AUX outputs low level. When the module puts all data into the RF
chip and starts transmitting, AUX outputs high level.
At this point, it indicates that the last packet of wireless data has been transmitted, and the user can continue to
enter data.
Data packets sent through mode 0 can only be received by the receiving module in mode 0.
Receivi
ng
The module is on the wireless receiving function all the time and can receive data packets from mode 0.
After receiving the data packet and the module AUX outputs a low level, it starts sending wireless data through
the serial port TXD pin. After all wireless data is output through the serial port, the module outputs AUX high
level.
6.3 RSSI Mode（Mode 1）
Type
M0 = 1，M1 = 0
Transmitti
ng
No wireless transmission is allowed, the received serial data will be discarded.
Receiving
Can not receive air wireless data, only scan the signal strength of the current channel, and output a strength value
(relative value) through the serial port every 100ms.
Numerical calculation method: signal strength =-(256 (decimal)-data (decimal)) dBm
If the hexadecimal value output by the serial port is 0x91, the actual signal strength is:-(256 (decimal)-145
(decimal)) =-111dBm
6.4 Setting Mode（Mode 2）
Type
M0 = 0，M1 = 1
transmit
ting
No wireless transmission is allowed, the received serial data will be discarded.
receivin
g
Unable to receive wireless data
configur
ation
Can be used for module parameter setting, use serial port 9600, 8N1, set module working parameters according
to specific instruction format
Note
When entering from the setting mode to other modes, the module will reconfigure the parameters. During the
configuration, AUX remains low level;
It outputs a high level after finished, so it is recommended that the user detect the rising edge of AUX.

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6.5 Sleep Mode（Mode 3）
Type
M0 = 1，M1 = 1
transmit
ting
Unable to transmit wireless data
receivin
g
Unable to receive wireless data
others
When the module is in the ultra-low power consumption state, all other functions of are turned off, and the sleep
mode can only be exited through the state switch of M1M0.
6.6 Fast communication test
Step
Description
1
Connect E49-400T20D module to the E49-TBL backplane, and then plug into the USB test board
(E15-USB-T2), plug into the computer to ensure that the driver has been installed correctly;
Plug in the mode selection jumper cap on the USB test board ( M1 = 0, M0 = 0)
2
Select 3.3V (the module supports 2.6 ~ 3.3V).
3
Run the "Serial Debug Assistant" software and select the correct serial port number and observe the sending
window and the corresponding receiving window

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7. Command format
Command mode (Mode 2: M0 = 0, M 1 = 1), the list of supported commands is as follows (when set, only 9600,
8N1 format is supported):
No.
Command format
Description
1
C0+operating
parameter
Send C0 + 5 byte working parameters in hexadecimal format, a total of 6 bytes and
must be sent continuously (save when power off)
2
C1+C1+C1
Send three C1s in hexadecimal format. The module returns the saved parameters and
must be sent continuously.
3
C2+operating
parameter
Send C2 + 5 bytes working parameter in hexadecimal format, a total of 6 bytes and
must be sent continuously(do not save when power off)
4
C3+C3+C3
Send three C3s in hexadecimal format. The module returns version information and
must be sent continuously.
7.1 Factory default parameter
Model
Factory default parameter value: C0 00 00 19 2E 00
Module type
Frequency
Address
Channel
Air rate
Baud rate
Transmitting power
E49-400T20D
433MHz
0x0000
0x2E
2.4kbps
9600
20
7.2 Reading operating parameter
Command format
Description
C1+C1+C1
In the setting mode (M0 = 0, M1 = 1), issue a command to the module
serial port (HEX format): C1 C1 C1,
The module will return the current configuration parameters,
such as: C0 00 00 18 20 00
7.3 Version number reading
Command format
Description
C3+C3+C3
In the setting mode (M0 = 0, M1 = 1), issue a command to the module serial port (HEX
format): C3 C3 C3,
The module will return the current configuration parameters, such as: C3 49 xx yy;
49 here represents the module model (E49 series), xx is the version number, and yy refers to
other features of the module (users can ignore).

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7.4 Parameter setting command
No.
Item
Description
Remark
0
HEAD
Fixed 0xC0 or 0xC2, it means this frame data is control
command
Must be 0xC0 or 0xC2
C0: Save the parameters when power off
C2: Do not save the parameters when power
off
1
ADDH
High address byte of module（default 00H）
00H-FFH
2
ADDL
Low address byte of module (default 0H）
00H-FFH
3
SPED
Rate parameters, including serial rate and air rate
7，6：Serial parity bit
00：8N1(default)
01：8O1
10：8E1
11：8N1
-------------------------------------------------
5，4，3 TTL serial speed (bps)
000: Serial baud rate is 1200
001: The serial port baud rate is 2400
010: The serial port baud rate is 4800
011: Serial baud rate is 9600 (default)
100: The serial port baud rate is 19200
101: Serial baud rate is 38400
110: Serial baud rate is 57600
111: Serial baud rate is 115200
-------------------------------------------------
2，1，0 Wireless air data rate （bps）
000：Air data rate is 1.2k
001：Air data rate is 2.4k（default）
010：Air data rate is 4.8k
011：Air data rate is 9.6k
100：Air data rate is 19.2k
101：Air data rate is 50k
110：Air data rate is 100k
111：Air data rate is 200k
----------------------------------------
UART baud rate can be different between
communication parties
The UART baud rate has nothing to do with
wireless transmission parameters & won’t
affect the wireless transmit / receive
features.
----------------------------------------
----------------------------------------
The lower the air data rate, the longer
the transmitting distance, better
anti-interference performance and
longer transmitting time
The air data rate must keep the same
for both communication parties.
4
CHAN
7,，6，5，4，3，2，1，0 Communication channel
Communication frequency （410M + CHAN * 0.5M）
（Default 0x2E: 433M）
----------------------------------------
00H-C8H，
correspond to 410~510 MHz
5
OPTION
7，Fixed transmission enabling bit（similar to
MODBUS）
0：Transparent transmission mode
1：Fixed transmission mode
-------------------------------------------------
6，5，4，3，2 Reserved bit, write 0
-------------------------------------------------
1, 0 Transmission power (approximation)
In fixed transmission mode, the first
three bytes of each user's data frame
can be used as high/low address and
channel. The module changes its
address and channel when transmit.
And it will revert to original setting
after complete the process.
----------------------------------------

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00：20 dBm（default）
01：17 dBm
10：14 dBm
11：10 dBm
----------------------------------------
The external power must make sure
the ability of current output more than
100mA and ensure the power supply
ripple within 100mV.
Low power transmission is not
recommended due to its low power
supply efficiency.
For example: The meaning of No.3 "SPED" byte:
The binary bit of the
byte
7
6
5
4
3
2
1
0
Configured by users
0
0
0
1
1
0
0
1
Meaning
UART parity bit 8N1
UART baud rate is 9600
Air data rate 2.4k
Corresponding
hexadecimal
1
9

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8. Hardware design
It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and
the module needs to be reliably grounded.；
Please pay attention to the correct connection of the positive and negative poles of the power supply. Reverse
connection may cause permanent damage to the module；
Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the
maximum value the module will be permanently damaged；
Please check the stability of the power supply, the voltage can not be fluctuated frequently；
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
margin, so the whole machine is beneficial for long-term stable operation.；
The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other
parts with large electromagnetic interference.；
High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the
module. If it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the
copper is spread on the Top Layer of the module contact part(well grounded), it must be close to the digital part of
the module and routed in the Bottom Layer；
Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer
or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees；
It is assumed that there are devices with large electromagnetic interference around the module that will greatly
affect the performance. It is recommended to keep them away from the module according to the strength of the
interference. If necessary, appropriate isolation and shielding can be done；
Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog,
power traces) around the module that will greatly affect the performance of the module. It is recommended to stay
away from the module according to the strength of the interference. If necessary, appropriate isolation and shielding
can be done.
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
still a risk of damage)；
Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；
The mounting structure of antenna has a great influence on the performance of the module. It is necessary to ensure
that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good
antenna extension cable to extend the antenna to the outside；
The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly
weakened.

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9. FAQ
9.1 Communication range is too short
The communication distance will be affected when obstacle exists.
Data lose rate will be affected by temperature, humidity and co-channel interference.
The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
The signal will be affected when the antenna is near metal object or put in a metal case.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the
transmitting power.
Due to antenna quality or poor matching between antenna and module.
9.2 Module is easy to damage
Please check the power supply to ensure that it is between the recommended power supply voltage. If the maximum
value is exceeded, the module will be permanently damaged.
Please check the stability of power source, the voltage cannot fluctuate too much.
Please make sure anti-static measure are taken when installing and using, high frequency devices have electrostatic
susceptibility.
Please ensure the humidity is within limited range, some parts are sensitive to humidity.
Please avoid using modules under too high or too low temperature.
9.3 BER(Bit Error Rate) is high
There are co-channel signal interference nearby, please be away from interference sources or modify frequency and
channel to avoid interference;
Poor power supply may cause messy code. Make sure that the power supply is reliable.
The extension line and feeder quality are poor or too long, so the bit error rate is high;

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10. Welding guidance
10.1 Reflow Soldering Temperature
Profile Feature
Curve feature
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
Solder paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）
Minimum preheating
temperature
100℃
150℃
Preheat temperature max (Tsmax)
Maximum preheating
temperature
150℃
200℃
Preheat Time (Tsmin to Tsmax)(ts)
Preheating time
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
Average rising rate
3℃/second max
3℃/second max
Liquidous Temperature (TL)
Liquid phase temperature
183℃
217℃
Time（tL）Maintained Above（TL）
Time above liquidus
60-90 sec
30-90 sec
Peak temperature（Tp）
Peak temperature
220-235℃
230-250℃
Aveage ramp-down rate（Tp to Tsmax）
Average descent rate
6℃/second max
6℃/second max
Time 25℃to peak temperature
Time of 25 ° C to peak
temperature
6 minutes max
8 minutes max
10.2 Reflow Soldering Curve

Chengdu Ebyte Electronic Technology Co.,Ltd. E49-400T20D User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
19
11. Related Model
Model No.
Chip
Frequenc
y Hz
Transmit
power
dBm
Test
distance
km
Air data
rate bps
Packagi
ng
Size
mm
Antenna
E49-400T20S
-
433M
20
1
1.2k~200k
SMD
26 * 16
IPEX/Stamp hole
12. Antenna guidance
12.1 Antenna recommendation
Antennas play an important role in the communication process, usually low-quality antennas will greatly affect the
communication system. Therefore, we recommend some antennas as supporting antennas of our company with excellent
performance and reasonable price.
Model No.
Type
Frequen
cy Hz
Interface
Gain
dBi
Height
Cable
Function feature
TX433-NP-4310
Flexible PCB
antenna
433M
SMA-J
2
43.8*9.5mm
-
Built-in flexible FPC antenna
TX433-JW-5
Rubber antenna
433M
SMA-J
2
50mm
-
Flexible &omnidirectional
TX433-JWG-7
Rubber antenna
433M
SMA-J
2.5
75mm
-
Flexible &omnidirectional
TX433-JK-20
Rubber antenna
433M
SMA-J
3
210mm
-
Flexible &omnidirectional
TX433-JK-11
Rubber antenna
433M
SMA-J
2.5
110mm
-
Flexible &omnidirectional
TX433-XP-200
Sucker antenna
433M
SMA-J
4
19cm
200cm
Sucker antenna, high gain
TX433-XP-100
Sucker antenna
433M
SMA-J
3.5
18.5cm
100cm
Sucker antenna, high gain
TX433-XPH-300
Sucker antenna
433M
SMA-J
6
96.5cm
300cm
Car mounted sucker antenna,
ultra-high gain
TX433-JZG-6
Rubber antenna
433M
SMA-J
2.5
52mm
-
Short straight
&omnidirectional
TX433-JZ-5
Rubber antenna
433M
SMA-J
2
52mm
-
Short straight
&omnidirectional
TX490-XP-100
Sucker antenna
490M
SMA-J
50
12cm
100cm
Sucker antenna, high gain
TX490-JZ-5
Rubber antenna
490M
SMA-J
50
50mm
-
Short straight
&omnidirectional