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Multi-Channel FM Transceiver & Wireless Modem WD889/WD250 - China Suppliers & Factory Solutions
WD889: 25W Size: (L x W x H) 137x135x44mm
WD250: 20W Size: (L x W x H) 124.7x76x34mm
MD1200 MODEM
Data transmission mode:
Transparent
Modulation mode:
FSK (f1=1.3KHz f2=2.1KHz)
Transmission rate:
75-1200bps self-adaption
BER:
10-7 (S/N=20dB)
Communication interface:
RS232/RS485/TTL
Temperature:
-40℃～+70℃
Voltage:
DC+7～+15V or +5V
Current:
RS232: <30mA; RS485: <60mA
Installation size:
59.5x39.3mm
Adapter model:
250A/WD889/WD886 etc.
MD4800 MODEM
Data transmission mode:
Transparent/Intelligent
Modulation mode:
FFSK
Wireless transmission rate:
1200/2400/4800bps
Interface transmission rate:
1200/2400/4800/9600bps
Address code/Data format:
Programmable setting
BER:
10-7 (S/N=20dB)
Communication interface:
RS232/RS485/TTL
Temperature:
-40℃～+70℃
Voltage:
DC+7～+15V or +5V
Current:
RS232: <30mA; RS485: <60mA
Installation size:
59.5x39.3mm
Adapter model:
250A/WD889/WD886 etc.
MD19200 MODEM
Data transmission mode:
Transparent/Intelligent
Modulation mode:
GMSK/CPFSK
Wireless transmission rate:
9600/19200bps
Interface transmission rate:
1200/2400/4800/9600/19200bps
Address code/Data format:
Programmable setting
BER:
10-7 (S/N=20dB)
Communication interface:
RS232/RS485/TTL
Temperature:
-40℃～+70℃
Voltage:
DC+7～+15V
Current:
<40mA
Size (L x W):
60x50mm
Adapter model:
250A/889/886/250G/258G etc.
MD38400 MODEM
Data transmission mode:
Transparent/Intelligent
Modulation mode:
GMSK/CPFSK
Wireless transmission rate:
38400bps
Interface transmission rate:
38400bps
Address code/Data format:
Programmable setting
BER:
10-7 (S/N=20dB)
Communication interface:
RS232/RS485/TTL
Temperature:
-40℃～+70℃
Voltage:
DC+7～+15V
Current:
<40mA
Size (L x W):
60x50mm
Adapter model:
250A/889/886/250G/258G etc.
Frequently Asked Questions
What communication interfaces do these MD series modems support?
All standard models including MD1200, MD4800, MD19200, and MD38400 support RS232, RS485, and TTL communication interfaces, providing high flexibility for industrial integrations.
Can these modems operate reliably in extreme temperature environments?
Yes, these industrial-grade modems are designed to operate stably within a wide temperature range of -40℃ to +70℃, ensuring reliability in harsh conditions.
What is the difference between Transparent and Intelligent data transmission modes?
Transparent mode transmits data as-is without modification. Intelligent mode allows for programmable settings such as address codes and data formats, supported by the MD4800, MD19200, and MD38400 models.
What power supply voltage is required for the MD series modems?
The MD19200 and MD38400 operate on DC +7V to +15V, while the MD1200 and MD4800 support a wider range of DC +7V to +15V or +5V.
Which adapter models are compatible with these modems?
Depending on the specific modem model, they are compatible with adapter models such as 250A, WD889, WD886, 250G, and 258G.