Home > Products > RS482/RS232 Data Radio > Wireless RS232/RS485/RS422 data Module Radio
Wireless RS232/RS485/RS422 data Module Radio
- 10000 Piece / Pieces per Month
- shenzhen
- Credit Card
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Product Details
Place of Origin: | Guangdong, China | Brand Name: | Safe Guard | Model Number: | SG-M304 |
Product Description
Wireless RS232 data Module
Special 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°C;
Several kinds of interfaces for choice: RS-232, TTL, RS-485;
DATA Format: 8N1/8E1/8O1( Customized )
Antenna Impedance: 50Ω (SMA Customized)
Application:
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.
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 Indicator:
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 indicator:
RF Output: 500mW
Adjacent channel power ratio: ≥70dB
Modulation Distortion: ≤3%
Modulation Sensitivity: 5mV
Current: ≤300mA
Size: 70*46*8mm
Interfaces definition:
| 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 of RS-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 |
6 Complete set of equipment:
1. One module of SG-M304;
2. 10 pin flat connector;
3. A whip antennas ( about 10cm)
Contact Us
- Shenzhen Safe Guard Co., Ltd.
- Contact nameKathy Li
- Phone86-755-82908961
- AddressRoom 21L,Block 9C,Baoneng Technology Park,No.1 Qingxiang road,Longhua new district,Shenzhen city; Shenzhen,Guangdong
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