KYL KYL-300I-192

Shenzhen KYL Communication Equipment Co., Ltd
KYL-300I Low Power Wireless
Transceiver Data Module
Shenzhen KYL Communication Equipment Co., Ltd
Address: C3705-3707, Huangdu Square, South of Exhibition Center, Yitian Road,
Futian District, Shenzhen, Guangdong, China 518048
Tel: 86-755-82943662
Fax: 86-755-83408785
Yahoo messenger: [email protected]
MSN: [email protected]
Email: [email protected]
Fax: +86-755-83408785
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Shenzhen KYL Communication Equipment Co., Ltd
Before using our products, please read the user manual carefully.
Any questions, welcome to contact us at the above mentioned methods.
I: About KYL-300I
KYL-300I is a kind of low power wireless transceiver data module. with small size,
low power consumption as well as good stability and reliability, it is widely used as
wireless data transceiver in long-ranges, narrowband low power UHF wireless data
transmitters and receivers with channel spacing as low as 25 KHz.
II: Features of KYL-300I:
1. Low power transmission: 500mW (default), 600mW~1W (optional).
2. Carrier frequency: 433MHz (default), 400-470MHz, 868MHz, 915MHz
3. High anti- interference and Low BER (Bit Error Rate)
Based on GFSK modulation, high-efficiency forward error correction channel
encoding technology is used to ensure the data’s resistance against both transient
interference and random interference. The actual BER can be achieved to 10-5~ 10-6
when channel BER is 10-2.
4. Long Transmission Distance
Within the visible range, when the height of antenna is higher than 2m and the BER
is 10-3, the reliable transmission distance is 3000m @1200bps and
[email protected] respectively.
5. Transparent data transmission
Transparent data interface used in transceivers is to satisfy many standard and
nonstandard user protocols. Any false data generated in air can be filtrated
automatically (What has been received is exactly what has been transmitted).
6. Multi-channels
KYL-300I provides 8 channels, expandable for 16, 32 channels according to
requirements of users.
7. Three connection methods with DB9 connector
KYL-300I transceiver provides DB9 connector with three connections: a
non-standard RS-232 port and a non-standard RS-485 port. USB interface port is
also available. It can get power from PC directly.
8. Big data buffer area
With optional interface baud rates: 1200/4800/9600/19200bps and 8N1/8E1/8O1
data format (decide by user), the transceiver can transmit unlimited data frames
with flexible user program.
Note: the RF data rate is only settled down before delivery; please specify our sales
your requirements when placing your orders.
9. Intelligent data control system and no other extra programs required
Even for half duplex communication, no other excessive programs are required.
All RF system data transmission/reception and other On-the-Fly conversion and
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control are performed by KYL-300I transceiver automatically.
10. Lower power consumption & nice sleep function
With +5V power, the receiving current is less than 25mA, the transmitting current
is less than 300mA, and the sleeping current is less than 20uA.
11. High reliability, small size and excellent performance
By using monolithic radio-frequency integrated circuit and single-chip MCU, the
transceivers have less peripheral circuits, high reliability, and low failure rate.
12. Various options for configurable antennas.
13. Watchdog monitor inside
Watchdog monitors the inner operation, so it can change the traditional product
structure and also improve the reliability of our modules.
14. Beautiful metal shell.
III: Application of KYL-300I:
KYL-300I is suitable for:
* Automatic Meter Reading (AMR);
* Wireless alarm and security systems;
* Building automation, security systems, wireless monitor, remote control and
access control system;
* Wireless data transmission, automatic data collection system;
* Radio modem can be used for Sports training & competition;
* Wireless dishes ordering;
* Wireless POS, PDA wireless smart terminal;
* RF module can be used for electronic bus station and intelligent traffics;
* RF transmitter, Wireless electronic display screen and Queuing machine;
* Wireless telemetry; charging for parking, parking lot;
* Wireless modem automobile inspection and four-wheel orientation;
* Wireless sensor, Industrial wireless remote control and air conditioning remote
* Data communication in the aspects of railway, oil field, dock and army.
* LED display in thruway and public place;
* Point to multi-point wireless network, wireless on-the-spot bus and automatic
data collection system
IV: How to use KYL-300I
KYL-300I provides RS-232, RS-485 and USB interface port for direct connection
with PC, RS485 devices, monolithic processors and other UART components.
The schematic diagram is shown below:
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1. Power supply
The factory setting is +5V (7.5V-12V is also available, please specify when placing
the order). Using better ripple factor, KYL-300I transceiver can share power supply
with other equipments. If possible, a voltage-stabilizing chip with 5V voltage is
more recommended than Switch power supply. But if only switch power supply is
available, the jam caused by switch pulse should be avoided. In addition, the
reliable grounding must be used if there is other device in the system. In case of
failing to connect with the ground, it can form its own grounding but must be
absolutely separated from the municipal electric supply.
2. Connection Definition with terminal
KYL-300I transceivers supply one 9-pin connector (JP1), their definitions and
connection methods with terminals are shown in Table 1.
Table 1: JP1 Pin Definitions and connection methods
Pin No. Signal Name Function
with terminal
Power supply DC
A of RS-485(TxD of RS-232)
B of RS-485(RxD of RS-232)
3. The connection schematic diagram between computer and our RF module
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4. Setting of channel, interface, and data format
Before using KYL-300I, you need to make simple configuration on your own
needs to determine the channel, interface mode and data format. You can view or
change the module's interface baud rate, channel and address code. Please read or
set the parameters as per the testing software KYLCOM.exe (in products box).
And the configuration is as follows:
i. Channel configuration:
Channel No.
Channel No.
Note: the frequency points corresponding to each channel can be adjusted
based on the user’s needs.
5. Installation dimension:
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6. The Function-indicator light
a. The LED indicator light will turn red for 0.5S once switched on.
b. The LED indicator light will turn green continually while receiving data from
c. The LED indicator light will turn red continuously when transmitting data into
air after receiving data from COM.
d. If the module moves to sleep mode, LED indicator light is always dark.
7. Supported protocol and Transmit capability
KYL-300I standard transceivers offer transparent protocol to support various
applications and protocols. If the user needs to decrease his cost or ease the
workload of terminal CPU, we can add other specific functions based on the
transparent protocol, such as addressing, data acquisition, command interpretation,
8. Sleep function instruction:
In order to reduce more consumption, KYL-300I transceivers support Sleep
function. In sleep mode, the current consumption is less than 20uA.
a. How to use the Sleep function:
The Pin8 ‘SLP’ in JP1 is the signal of sleep control. At high power level,
transceiver stays in working mode. At low power level (<0.5V), transceiver stays
in sleep mode. The SLP signal can convert transceiver from working to sleep
mode in 1ms after falling edge. If the Sleep signal arrives when the transceiver is
transmitting data, the module will enter sleep mode after finishing transmission.
From sleep mode to working, it takes the transceiver 1ms after rising edge.
To disable the opened sleep function of KYL-300I, the SLP (SLEEP) pin should
be definitely connected with 0 or ground.
b. Attentions about the use of sleep function:
When the sleep function enabled, any supply glitches, such as switch dithering,
fire striking or quick switching on and off may cause the transceiver moving to
wrong sleep mode.
Users can avoid this error by making a compulsive restoration once the CPU
delays 100ms after switching on
Sleep Timing Diagram:
Sleep Timing Diagram:
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9. Attentions about data transmission
a. The delay time (tc) of conversion between transmitting and receiving is less
than 1ms.
Timing diagram:
b. The delay time of transceivers between the first bit sent by TxD to the first
bit received by RxD.
As data processing happens on user’s data by KYL-300I transceiver using FEC
(Forward Error Correction) or other correction algorithm, when RxD of
KYL-300I transceiver ‘A’ receives the data, then transmits it, the other one
transceiver ‘B’ will have a delay (ts) to receive and transmit by TxD. Different
RF data rate causes different delay time. Please see the specific delay time
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RF Date Rate
RF Date Rate
Timing diagram:
c. Error dealing procedure:
To enhance the reliability and stability of user’s systems, a verified bit or a
Cyclic Redundancy Check (CRC) mode is highly recommended to resist wrong
information while using KYL-300I modules.
d. Large-number data transmission
In theory, when the interface data rate is faster than the RF data rate, KYL-300I
transceivers can sent unlimited-long data package, but any long packages more
than 120B are not recommended. The length of each package should be between
60~100B. We also recommend users to resist the wrong information by using
Automatic Error Request Equipment (ARQ).
If the actual transmission BER (Bit Error Rate) is 10-4, 1 packet with 1KB data,
which is about 10-thousand bits, is sent, theoretically, at least 1 bit will be
received wrongly. So the 1KB information will never be received correctly.
But if we package the data into 10 packets with 100B for each, when all 10
packets are sent, there will be only 1 packet wrong according to this probability.
After that, it will resend this wrong packet using ARQ mode. So resending one
more packet and the efficiency rate is reduced 10%, all data will be absolutely
received correctly.
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10. Antenna configuration:
Many appropriative antennas for low power RF modules are selected to meet
different users’ antenna configurations. Please ask our Sales for further
information about the antenna’s dimension and performance.
a. Helical SMA antennas
KYL-ANT-433-10-SMA: 100mm helical SMA antennas with high gain and low
cost, reach a long distance.
KYL-ANT-433-3-SMA: 28mm SMA helical antenna with magnetic core, small
size, beautiful appearance (like the mobile phone antenna)
KYL-ANT-433-10-ZSMA: 100mm SMA helical antenna with folding joint, easy
for adjusting the direction and fixing.
b. Magnetic vehicle antenna
KYL-ANT-O433S-300H1.5-SMA: include magnetic antenna base, suitable for
equipment with metal shell, easy for fixing, effective to enhance the transmission
For more kinds of antennas, please go to our website:
If you have special demands on antennas, please specify, we can design and produce
for you individually.
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V. Network Application of KYL-300I
The communication channel of KYL-300I is half duplex, which is most suitable for
the communication mode of point to multi-point. Under this mode, one master
station must be set, and all of the rest are slave stations. A unique address is given
to each station. The coordination of communication is controlled by master station
that uses data frames containing address code to transmit data or command. Slave
station will receive all of the data and command and compare the received address
code with local address code. If they are different, the data will be deserted without
any response. If those address codes are the same, it means the data is sent to the
local. Slave station will make different responses according to the transmitted data
or command and send back the data of response. All these jobs must be performed
by upper protocol, and it is assured that there is only one transmitter-receiver in the
state of transmission in the communication network at any instant moment so as to
avoid the cross-interference.
KYL-300I can also be used for point-to-point communication with easier operation.
For the programming of serial port, all you have to do is to remember that its
communication mode is semi duplex while always observing the time sequence of
come-and-go for receiving and transmitting.
VI. Technical specification of KYL-300I
* Modulation mode: GFSK/FSK
* Working frequency: 400MHz~470MHz;
* Power supply: DC 5V (7.5V~12V is available, specify when placing the order);
* RF power: ≤500mW, 600mW~1W is available;
* RF data rate: 1200/2400/4800/9600/19200bps (Set before delivery);
* Receive current: <28mA (TTL connect);
* Receive sensitivity: -123dBm (1200bps); -118dBm (9600bps);
* Transmitting current: <350mA;
* Sleep current: <20uA;
* Interface data format: 8E1/8N1/8O1;
* Working temperature: -40~+80 (industrial standard)
* RF Line-of-sight Range: 2km ([email protected]);
3km ([email protected]);
* Size: 80mm*45mm*20mm (without antenna port).
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VII. Description of type
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Baud Rate
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