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Model Number: SG-M304-2
Brand Name: SAFE GUARD
Key Specifications/Special Features:
Introduction: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:
Applications:
Specifications:
Receiver indicator:
Transmitter indicator:
Complete set of equipment:
- 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 temperatures: -40~70℃
- Several kinds of interfaces for choice: RS-232, TTL, RS-485
- DATA format: 8N1/8E1/8O1 (customized)
- Antenna impedance: 50Ω (SMA customized)
- Remote reading system of water, electric and gas supply
- Building automation, security & protection, devices monitoring and access control system
- Wireless calling system
- Spot management, station management
- RF transmitter Wireless electronic display screen and queuing machine
- Electronic bus station and intelligent traffic
- Alarm systems
- Frequency: VHF/UHF ( 223-235MHz )
- Power: 500mW
- Frequency stability: ± 2.5ppm
- Mode: half-duplex
- Channel spacing: 25KHz
- Voltage: DC 12V ( Customized )
- Transmission distance: 2km
- 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
- RF output: 500mW
- Adjacent channel power ratio: ≥70dB
- Modulation distortion: ≤3%
- Modulation sensitivity: 5mV
- Current: ≤300mA
- Size: 70*46*8mm
- One module of SG-M304
- One antenna
Name | Description | Level | Remark | |
1 | VCC |
DC |
12 V |
DC 12V ( as good in range 7.5~15V), or customized |
2 | ||||
3 |
GND |
GND |
---- |
------------- |
4 | ||||
5 | A(TXD) | RS-485 A or TXD of RS-232 | Either RS-485 or RS-232 | |
6 | B(RXD | RS-485 B or RXD ofRS-232 | ||
7 | PTT | Transmit control | TTL | Low level validity |
8 | MIC | Audio input | --- | Recommend 1K-2K, -27dB sensitivity of microphone |
9 | SP | Audio output | --- | 8Ω 0.5 |
10 | SQ | Receiving indication | TTL | High-level |
Shipping Information:
- FOB Port: Shenzhen
- Lead Time: 3 - 5 days
Main Export Markets:
- Asia
- Australasia
- Central/South America
- Eastern Europe
- Mid East/Africa
- North America
- Western Europe