Radio Frequency Serial Data Link Kits

Ocean Controls
PO Box 2191
Seaford BC
Factory 3/24Wise Ave
Seaford,
Vic, Australia 3198
ABN 22 061 932 027

Ph 61 3 9782 5882
Fax 61 3 9782 5517

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RF Transmit Receive Links

These are a series of four kits that implement an RF data link. Each receiver has a 4-bit address set by an onboard 4-way DIP switch. This allows a total of 16 receivers to be used in a 'network' with each one being uniquely addressable.

The RF modules operate at 433.94MHz and use 'amplitude modulation' to transmit data. This transmission method, also know as 'On-Off Keying (OOK)', transmits data by simply switching the carrier signal on and off. The RF transmitter and receiver modules used in these kits are available as separate items, A18-Tx and A18-Rx. They are produced by 'WenShing' of Taiwan - datasheets can be downloaded from their website at "www.wenshing.com.tw".

Each kit contains an Atmel 89C2051 microcontroller that handles all the I/O as well as encoding and decoding the data. The code is NOT available for distribution.

KIT-173 RF Serial Transmit Card
KIT-173 can receive up to 64 characters via its serial port and transmit the message. The serial port baudrate is selectable from 300, 1200, 2400 and 9600. The data format is fixed at 8N1 (8 data bits, no parity, 1 stop bit). Two input modes are available as well as input echo if required. An optional destination address can be automatically inserted into the message before transmitting.

Use this card and the KIT-174 below to remotely link your PC with our KIT-108 Serial I/O Controllers

Download datasheet file

kt_5173_250.jpg (14839 bytes)

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KIT-174 RF Serial Receive and Serial Output Card
KIT-174 will receive any messages sent by KIT-173 or KIT-175 and output the data via its serial port. The data format is fixed at 8N1 (8 data bits, no parity, 1 stop bit). The data rate is selectable between 2400 and 9600 baud. An optional carriage return/line feed can be appended to the output.

Download datasheet file

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KIT-175 RF Parallel Transmit Card
KIT-175 monitors 8 digital inputs for change. If change is detected on any input the state of all the inputs is transmitted. An optional destination address can be added to the message before transmitting. The pinout of the input connector allows direct connection to a PC printer port.
Use this card and the KIT-176 below to remotely link your PC with our KIT-074 and KIT-165 Parallel I/O Controllers

Can be used with Timer v3.0.0 from http://www.hottimesoftware.com/
and the PC Parallel Port Relay Cards to control sprinklers, water, hydroponics, irrigation, solenoids, relays, lights, drippers, pumps, bells, time clocks etc.
Timer is the perfect timing software to control hydroponics, relays, solenoids or lights from a computers printer port.

Download datasheet file

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KIT-176 RF Parallel Receive Card
KIT-176 will receive any messages sent by KIT-173 or KIT-175 and output the data via its parallel port. The pinout of the output connector is the same as a PC printer port, allowing direct connection to a printer. Optional features are included to control a Centronics type printer.

Download datasheet file

Purchase

PURCHASING THE RF DATA LINKS

All prices are in Australian Dollars. Prices do not include GST (Goods and Services Tax). 10% GST applies to goods delivered in Australia. Australian GST is not paid on shipments despatched to an international destination. You can check the exchange rate by going to http://www.x-rates.com

Item	Description	Quantity	Price(AUD$)
	KIT-173 RF Data Link Transmitter, Serial Input		$48.00
	KTA-173 RF Data Link Transmitter, Serial Input Assembled		$69.00
	KIT-174 RF Data Link Receiver, Serial Output		$55.00
	KTA-174 RF Data Link Receiver, Serial Output Assembled		$79.00
	KIT-175 RF Data Link Transmitter, Parallel Input		$48.00
	KTA-175 RF Data Link Transmitter, Parallel Input Assembled		$69.00
	KIT-176 RF Data Link Receiver, Parallel Output		$55.00
	KTA-176 RF Data Link Receiver, Parallel Output Assembled		$79.00