Home > Construction & Decoration > Fence > Security Fence > RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem

RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem

RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem thumbnail-1
RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem photo-1
US$ 200 - 400 MOQ: 1 Set
Key Specifications
Get Latest Price
Place of Origin:
Guangdong, China
Brand Name:
Safe Guard
Model Number:
SG-303
Contact Supplier Request Quote Chat Now
Shenzhen Safe Guard Co., Ltd.
Payment & Shipping
Payment Methods:
Port of Shipment:
Shenzhen Port
Delivery Detail:
Delivery time depends on order quantity.

Related Products

  • Product Details

  • Company Profile
  • Contact Us
Place of Origin Guangdong, China
Brand Name Safe Guard
Model Number SG-303

 

Half-duplex Wireless Data Transceiver

SG-303

RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem

SG-303 wireless data transmission radio, is a long-distance wireless data transmission products.Its advantages of small size, metal shell, good shielding performance, strong anti interference, the internal use of integrated amplifier,TCXO reliability device and a built-in watchdog that ensure its good stability and high reliability. Half duplex communication working mode which is more convenient for the user to provide two-way data signal transmission and detection and control functions. The Send and receive time less than 50ms and timeliness. Suitable for wireless data acquisition, industrial control, the measurement and control of the oil field, watermark monitoring important industry.

 

Features:

1) Power and sensitivity:

  Radio frequency output power is more than 5W,

  high receiving sensitivity -120dbm (1200bps);

                                          -117dbm(2400bps,

                                          -105dbm(9600bps)

2). Multiple frequency,to meet various customers' needs

Carrier frequency can be  220-220 MHZ, 450-470 MHZ.

<![if !supportLists]>3) <![endif]>The transmission distance

4) High speed wireless communications and data buffer.

Air rate is greater than or equal to a serial port rate can continuous transmission infinite data, when the air rate is less than or equal to a serial port rate, temporary storage buffer then transfer.

5) transparent transmission, convenience for the user.

Radio after receiving the data needs to be sent, launch will start automatically without user to send and receive control.

6) Low power consumption

Receiving current < 60 mA, emission current < 1.5 A, hibernation current < 1 ma.

7) High reliability, small volume, light weight.

Aluminum alloy shielding enclosure, small size: 85 mm x 58 mm x 16 mm.

   

 

Connection:

 

The definitions and connection methods with terminals are shown in the following

RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem 

 

 

name

Description

level

remark

1

GND

GND

5V

 

2

A(TXD)

RS-485 A or TXD of RS-232

 

 

3

B(RXD)

RS-485 B or RXD of RS-232

 

 

4

NC

 

 

 

5

DGND

DGND

 

 

6

RXD/TTL

Data receive(TTL level)

TTL

 

  7

TXD/TTL

Data transmit(TTL level)

TTL

 

8

--

--

 

 

9

Test

Internal test

 

 

 

 

Specification:
 
Frequency: 230MHz/400MHz/420MHz/450MHz
Frequency stability: ±2.5ppm;
Working mode:Half-duplex
Channel spacing: 25  kHz;
Bit rate:1200/2400/4800/9600/19200bps (option)
Channel rate:1200/2400bps  (option)
Transceiver conversion time:<50ms
Receiving sensibility: -117dBm(2400bps)
Working temperature:-40~+80℃; (industrial grade)
Working humidity:10% ~ 90% relative humidity, no condensation
Data format:8E1/8N1/801(other format also available,for example:9 data bits)
Power supply: DC12V(can also custom made according to your request).
Transmission distance: 12Km(matched with magnetic antenna in open air,1.5m length)
Dimension: 85x58x16mm (without radiator);
 
 
Receiver technical index:
 
Receiving sensibility: ≤0.25μV ( 12dB SINAD)
Adjacent channel selectivity: ≥70dB
Intermodulation suppression: ≥65dB
Spurious and image rejection: ≥70dB
Audio output power : 0.5W(8Ω,10% distortion)
Receive distortion:≤3%
Receiver current:≤ 50mA
Dimension:85x58x16mm
 
Transmitter technical index:
 
Transmit output power: 5W
Transmit current:<1.5A
Sleep current: <1mA
Clutter and images rejection: ≥70dB
Spurious Response: ≥70dB
Modulation frequency offset:≤3%
Modulation distortion:5mV
Modulation sensibility:≤300mA
Size: 85x58x16mm

 

RS485/RS232 Half-duplex Wireless Data Transmitter/Receiver Modem

 

Send Inquiry to This Supplier

Message
0/5000

Want the best price? Post an RFQ now!
Shenzhen Safe Guard Co., Ltd.
Business Type
Manufacturer, Trading Company
Year Established
2009
Factory Size
1,000-3,000 square meters
Total Employees
51 - 100 People
Contact Supplier Request Quote Chat Now

You May Also Like

Product Categories

Related Searches

Recommended Categories

Explore top categories and find suppliers for your specific needs
Stair Fence Stair Fence
Farm Fence Farm Fence
Soundproof Fence Soundproof Fence