FSK Wireless DATA Transceiver

RS485/RS232/RS422 Wireless Data Transceiver

SG-M304

SG-M304 is a module of DATA transmission integrated with voice communication. Specially designed for automatic industry with high reliability and stability. Provide voice transmission channel, can be connected to a microphone or loudspeaker directly, very easy to extend its functions and applications by the clients. And moreover, we are always ready for your OEM.

Features: 

Use TCXO and digital PLL advanced technologies, high stability;

Integration of transceiver, both digital and analog signals can be send and switch quickly;

Steady outsell, good hidden and stronger anti-interference;

Industrial designes, work temperature: -40~+70℃;

Several kinds of interfaces for choice: RS-232, TTL, RS-485;

DATA Format: 8N1/8E1/8O1( Customized )

Antenna Impedance: 50Ω (SMA Customized)

Application:

 1)Remote reading system of water, electric and gas supply;

 2)Building Automation, security & protection,  access control system;

 3)Wireless calling system;

 4)Spot management, station management;

 5)RF transmitter Wireless electronic display screen and queuing machine;

 6)Electronic bus station and intelligent traffic;

 7)Alarm systems.

Specification:

Frequency: VHF/UHF ( 223-235MHz )

Power: 500mW

Frequency stability: ± 2.5ppm

Mode: half-duplex

Channel spacing: 25KHz

Voltage: DC 12V ( Customized )

Transmission distance: 2km

Receiver index:

Usable sensitivity: ≤0.25μV (12dB SINAD) 

Adjacent channel selectivity: ≥70dB

Spurious Response Immunity: ≥ 65dB

Adjacent channel power ratio: ≥70dB

Audio Output: 0.5W(8Ω, 10% Distortion)

Distortion: ≤3%

Current: ≤ 50mA

Transmitter index:

RF Output: 500mW

Adjacent channel power ratio: ≥70dB

Modulation Distortion: ≤3%

Modulation Sensitivity: 5mV

Current: ≤300mA

Size: 70*46*8mm

Interfaces definition:

Complete set of equipment:

1. One module of SG-M304;

2. 10 pin flat connector;

3. A whip antennas ( about 10cm)

Antenna configuration: 

Many appropriative antennas for low power RF modules are selected to meet different user’s antenna configuration. Please ask our Sales office for further information about the antenna’s dimension and performance. The main options of antennas are exterior flabelliform rubber antenna with helical SMA joint, small osculum antenna, small rod antenna and elbow antenna. If the user has special demands on antennas, we can design and produce individually.